mm1332 precisionThe expression mm1332 precision was only known from the reference materials, but the exact content was not clear. It may be a precision technology or concept related to a certain machine tool (such as the mm1332 machine tool mentioned in Material 3). At present, a more detailed and accurate explanation could not be given.
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Wrath 457mmHMs Furious was equipped with a 457mm (18-inch) main gun. These main guns weighed 827 tons with turrets, and the super-heavy ammunition used weighed 3320 pounds (1506 kilograms). The muzzle velocity was 2270 feet (692 meters) per second, and the maximum range was 28,900 yards (26,430 meters). Using a 1506 kg super-heavy armor-piercing bullet could penetrate 457 mm (18 inches) of protection within a range of 13720 meters, and using a 1633 kg ordinary shell could also cause 373 mm (14.7 inches) of armor-piercing effect within a range of 14630 meters, but the recoil was extremely high.
The Wrath was originally the Braveheart class "Large Light Cruiser" No. 3. Construction began on June 8, 1915. It was launched on August 15, 1916 and entered service in July 1917. Initially, it was designed to carry two single-barrel 18-inch (457mm) heavy cannons. With the Royal Navy's exploration of ship-borne aviation, it was modified during construction. After completion, the single-barrel 18-inch cannon at the stern was retained, and the bow cannon position was changed to a hangar that could accommodate 10 aircraft and a flight deck was laid. In 1921, the main cannon at the rear was removed and transformed into the front and rear flight decks, which were responsible for take-off and landing respectively, while the bridge and chimney were retained in the middle. During the Second World War, the ship was mainly used in auxiliary combat due to its old hull, and some modification work was carried out. It was sold and demolished in 1948.
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Canon 100mmCanon 100mm has a variety of lenses. The following is some information about Canon 100mm lenses:
- "EF100mm F2.8LIS USM lens: This is a macro lens (fixed-focus). The filter size is 67mm. The lens structure is 12 groups of 15 pieces. The maximum aperture is F2.8 and the minimum aperture is F32. The anti-shake performance is optical anti-shake (level 4). The closest focusing distance is 0.3m. The lens positioning is a 135mm full-frame lens. It was equipped with dual IS image stabilisers that could compensate for the "pan shake" and "tilt shake" during macro photography. The lens structure included a piece of KD (Ultra Low Dispersion) lens. The optimized lens position and coating could suppress ghostly shadows and glare. It used a circular aperture and could be purchased with a tripod mount for professional macro photography. The maximum magnification was 1 times. It was also equipped with a ring-shaped ultrasonic motor for full-time manual focusing. The reference price was 7199 yuan, and the second-hand reference price was 3000 - 3800 yuan. It performed well in macro and portrait shooting, and the autofocus speed was ideal. It was still a hot item in the second-hand market during the spring shooting season.
- "EF100mm f/2 USM lens: It is used as a medium telephoto lens (fixed focus). The lens mount is Canon's EF-mount. The focal length range is 100mm. The filter size is 58mm. The lens structure is 6 groups of 8 pieces. The maximum aperture is F2.0, the minimum aperture is F22, and the closest focusing distance is 0.9m. The reference price is 3999 yuan.
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Mm, playing in the streamIf you want to play in the stream, you can consider the following locations: Taihe Baishan Village, Baiyun District, Guangzhou. Driving to Baishan Village, it takes about 1 hour to reach in Guangzhou City. It takes about 3 - 5 minutes to walk from the parking lot at the entrance of the village to the water play spot. You can navigate to "Yihe Village"(located in Baishan Village). The stream here is clear and shallow. You can see many small fish. You can bring your own slippers, fishing nets, water guns and other small toys. There is a pavilion next to it for a rest and picnic. Surrounded by green mountains and trees, there are greenways for walks. Near the ecological design town of Conghua in Guangzhou, it was 1.5 hours 'drive from downtown Guangzhou. Near the bus station of Luo Village in Liangkou Town, you could see the tents set up after parking the car and walking along the green road. The stream here was cold and clear, and you could fish and shrimp, play with sand and stones, etc.
It was important to note that there were certain dangers in playing with water in a stream. For example, a seemingly calm stream might hide hidden dangers such as mountain torrents and mudflows. If you heard rustling or roaring in the valley but could not find the source, you could sometimes feel a slight vibration. This could be the sound of loose sand and flowing water, usually a signal that mountain torrents or mudflows were forming. If the water level is rising rapidly, the flow rate is obviously increasing, or there are more firewood, trees, and other floating objects in the water, they must move quickly. If you were unlucky enough to encounter a flash flood, you should try your best to run ashore and fight for the "golden time" to escape as fast as possible. When escaping from the disaster scene, you should choose the nearest safe route to run horizontally along the hillside. Do not run down the hillside or downstream along the valley exit. The flash flood flows fast and rises quickly. Don't easily swim away to prevent being washed away by the flash flood. Call the rescue phone as soon as possible and wait for rescue. At the same time, during the summer vacation, parents should take on the responsibility of supervision, strengthen drowning prevention education, improve their children's safety awareness, and warn their children not to play by the river, sea, or lake to prevent drowning accidents.
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