dirty curve
Keeling curve
The Keeling curve was drawn by the American scientist Charles David Keeling. Keeling built an observatory in Mauna Loa, Hawaii. Two years after the observatory was built, he published a paper titled Atmospheric CO2 Concentration and Isotopic Abundance, in which he drew the Keeling curve. The curve of the change in the concentration of carbon dioxide observed by Keeling in Mauna Loa was named the Keeling curve, which was considered the most landmark image of climate change science in the 20th century.
" The Island of Life " is also a wonderful novel. Everyone is welcome to read it!
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2026-04-01 07:08
Which is easier to drive, a reverse curve or a continuous curve?
The difficulty of driving a reverse curve and a continuous curve could not be simply compared because it depended on many factors.
According to the definition and design requirements, a reverse curve is a road with a design speed of less than 60Km/h. One or both of the turning radius of the two reverse curves is smaller than the corresponding radius of the corresponding design speed, and the distance between the curves is less than or equal to 2 times the design speed. On the other hand, a continuous curve road is a road with a design speed of less than 60km/h. There are three or more reverse flat curves in a row, and the radius of the flat curve is smaller than or two of them are smaller than the specified radius, and the distance between the curves is less than or equal to 2 times the design speed.
For a driver with rich driving experience and good control skills, if he was familiar with the road conditions and vehicle performance, he might find it relatively easy to turn in the opposite direction because there were more turns in the continuous curve road. He needed to adjust the direction more frequently, control the speed, and respond to changes in the line of sight. However, for inexperienced drivers, whether it was a reverse curve or a continuous curve, it was challenging. They needed to drive carefully, such as decelerating in advance, paying attention to the curve situation, and controlling the steering wheel operation range reasonably.
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2026-09-11 16:03
What is the tangency of a curve?
From a geometric point of view, the tangents of a curve were straight lines that just happened to touch a point on the curve. When the tangents passed through a point on the curve (the point of tangency), the direction of the tangents was the same as the direction of the point on the curve. From an algebra point of view, in advanced mathematics, if a function had a derivative at a certain point, then the derivative at that point was the slope of the tangency line passing through that point. The straight line formed by the point and the slope was the tangency line of the function.
In addition, for a special curve such as a circle, in plane geometry, a straight line that has only one common point with the circle on the same plane is the tangents of the circle. For a general curve, if P and Q are two adjacent points on the curve C, and P is a fixed point, when the point Q is infinitely close to the point P along the curve C, the limit position of the secant line PG is called the tangents of the curve C at the point P, and the point P is called the tangents. The straight line PG that passes through the tangents P and is vertical to the tangents P is called the normal of the curve C at the point P (This reflects the idea of infinite approach). It should be noted that when PT is the tangency of curve C at point P, it may have another intersection with curve C. On the contrary, although the straight line l has only one intersection with curve C, it is not necessarily the tangency of curve C.
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2026-01-31 17:20
What is an integral curve?
In astronomy, the integral curve was a proper term. In the field of mathematics, curve integral was a type of integral. The value of the integral function followed a specific curve (called the integral path). When there was such a concept related to the integral path, it could also be understood as the concept of an integral curve. The curve integral included the first type of curve integral and the second type of curve integral. When the integral path was a closed curve, it was called loop integral or curve integral. In addition, there was also the integral curve defined by the differential equation. The answer could be found from the equation itself. At this time, the properties determined by the equation were qualitative.
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2026-01-31 07:58
What is a flat curve?
Horizontal curve was the general term for the curve at the turning point of the route in the horizontal alignment, including circular curve and transition curve. It was the line connecting two straight lines, allowing the vehicle to transition from one straight line to another straight line.
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2026-01-20 08:40
What is a curve graph?
In a plane graph, a graph composed of curves or a graph composed of curves and straight lines was called a curve graph. For example, a circle was a closed graph surrounded by a smooth curve, and it was a curve graph. For example, if the outline of an irregular figure was mainly composed of curves, it would also be considered a curved figure.
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2026-01-19 10:16
How to read the curved curve
When the word "bend" in "bend" means bending, read qū.
The novel " Flood Dragon " is equally exciting. Everyone is welcome to click and read it!
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2026-06-19 07:11
A novel about the curve of buttocks
He recommended a few super interesting novels. " The Enchanting Madam " was a modern romance novel written by 77 Love Candies. It was a casual fantasy novel, and it was very enjoyable to watch the story of an enchanting beauty.
My Host Is a Thigh is awesome! It was a sci-fi space-time travel story created by A Shi. After the death of the female protagonist, Luo Fu, there was a new opportunity, and the system missions were all over the place. Luo Fu was super awesome as a " high-level thigh ", and the supporting roles of Pan Pan and Er Li were also very interesting. The style of writing was calm, the female lead was neither a saint nor an idiot, and the rhythm was well grasped. Although the cheat was a little big, the flaws did not obscure the jade. There was no male lead nor ambiguity, and the three views were extremely correct. Every mission story was short, concise, and readable. I recommend it!
The Biggest Loser System was a novel about urban life written by a handsome African man. The protagonist Qin Huai asked the system how to lose 20 pounds without exercising, dieting, or spending money. The system said amputation, which was super funny. This was the story of Fatty fighting with the system and finally becoming a male god. It was a relaxed and humorous story. Fatty friends and those who liked this kind of story could read it.
" You Can Withdraw Kingdom Gold Coins " was a game system novel about a king without a master. It was about how Zhang Fan, a player from " The Age of the Kingdom," discovered that in-game gold coins could be exchanged for money.
" The System's Beauty Creation " was a modern romance novel written by Buka. It was relaxed, cheerful, and interesting.
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2026-08-08 06:04
Complete collection of curve pictures
The following are some curve-related photo material types: abstract black lines fluid terrain texture background pattern material, beautiful five-pointed star gradual change element decorative hexagon curve pattern material, colorful curve streamer element decorative ribbon pattern material, geometric cone line curve tent fold texture decorative pattern material, distorted three-dimensional line grid background texture decorative pattern material, colorful music gradual change line curve ribbon decorative pattern material, beautiful colorful line curve five-pointed star background decorative pattern material. Beautiful curve starry sky neon shining light effect decorative embellishment pattern material, abstract transparent line curve combination element graphic pattern material, red curve pattern background scene poster material geometric texture, colorful curve design material, ink curve pattern PS brush, colorful gradual curve texture material, audio sound wave scale music curve template material, simple curve template material, gradual dynamic streamlined curve semicircle material girl pink blue, colorful gradual curve streamer material. Science and technology curve decorative pattern material, gradually changing lines science and technology curve decorative material design, red gradually changing lines party building material background element, curve national day, China style texture, curve background, mountain line, golden country tide, curve line, shade texture decorative pattern, abstract line shape terrain, mountain grain, gradually changing shade, dark grain pattern, purple beautiful silk ribbon material, decorative line, curve element, leaf curve, shade background, Real estate poster simple science and technology beautiful dynamic curve line texture, blue real estate high-tech medical equipment line curve material, gradual science and technology beautiful line curve ribbon decorative picture material, rose red simple gradual decorative ribbon beautiful line grid curve texture, colored geometric line curve fold texture background material.
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2026-01-22 18:20
Does a certain book have a curve?
I don't know which book you're referring to. However, generally speaking, the plot and character development of a novel have a certain degree of curvature, which depends on the genre of the novel, the author, the bookstore, and other factors. Some novels might add some twists and turns in the story to make the characters experience more challenges and grow up. These could be seen as a certain arc.
1 answer
2024-09-12 02:39
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