介绍雨伞,双筒望远镜,自行车的英文文章

发布网友 发布时间：2022-04-25 18:52

我来回答

共2个回答

热心网友 时间：2023-10-08 14:26

自行车：最早起源于法国人西夫拉克于1791做的有前后两个木质的车轮，中间连着横梁，上面 安了一条板凳，像一个 玩具的“木马轮”到1818年，一个德国看林人德莱斯的，也制做了一辆木轮车，样子跟西夫拉克的差不多，不过，他在前轮上加上了一个控制方向的车把，可以改变前进的方向。但是骑车时依然要用两只脚蹬地，才能推动车子向前滚动。当时的德莱斯骑着他的“小马崽”上路试验时，遭到不少人的嘲笑。1840年，英格兰的铁匠麦克米伦，在德莱斯发明的“小马崽”的基础上，进行了改进。他在后轮的车轴上装上曲柄，再用连杆把曲柄和前面的脚蹬连接起来，并且前后轮都用铁制．前*，后轮小。这样一来，人的双脚真正离开了地面，由双脚的交替踩动变为轮子的滚动。1842年，麦克米伦骑上这种车，一天跑了20千米。到1861年，法国的米肖父子．在前轮上安装了 能转动的脚蹬板，车子的鞍座架在前轮上面。他们把这辆车冠以“自行车”的雅名，并1867年在巴黎博览会上展出。真正具有现代化形式的自行车是在1874年诞生。英国人罗松在自行车上装上链条和链轮，用 后轮的转动来推动车子前进。 1886年英国的机械工程师斯塔利，从机械学、运动学的角度设计出了新的自行车样式，装上前叉和车闸，前后*小相同，以保持平衡，并用钢管制成了菱形车架，还首次使用了橡胶车轮。斯塔利不仅改进了自行车的结构，还改制了许多生产 自行车部件用的机床，为自行车的大量生产和推广应用开辟了宽阔的道路，因此他被后人称为“自行车之父”。他所设计的自行车车型与今天自行车的样子已经基本一致了。双筒望远镜：17世纪初，荷兰密特尔堡镇一家眼镜店的主人科比斯赫，为检查磨制出来的透镜质量，把一块凸透镜和一块凹镜排成一条线，通过透镜看过去，发现远处的教堂的塔好象变大而且拉近了，由此发现了望远镜原理。1608年他为自己制作的望远镜申请专利，并遵从当局的要求，造了一个双筒望远镜。相机：1830年，德国出现了相机的原始雏形。1839年8月19 日法国画家达盖尔公布了他发明的“达盖尔银版摄影术”，于是世界上诞生了第一台可携式木箱照相机。1947年，美国人埃德温·赫伯特·兰德发明了拍立得相机 至于雨伞，有人说是埃及人发明的，但我记得小时曾在一本书上看到，雨伞起源于荷叶，在中国早期公元前1000多年前，人们无意发将鲜荷叶顶在头上能够避免被雨水打湿，于是有工匠仿照荷叶的形状，用布做出了“伞”但是不变于携带，后人把其改造成可收缩的（这个后人好像是鲁班或者他妻子）这是伞的最初。直至后来有纸张的出现，于是改用油纸作伞。 Cycling: The earliest Xifulake originated in France in 1791 to do a before and after the two wooden wheels, in the middle attached beams, above the safety of a bench, like a toy, "Trojan horse wheel" to 1818, a German view of forest Delaisse, nor the system made a wooden wheel, almost like with Xifulake, but he added a front wheel on the handlebar control direction can be changed the way forward. However, when you still have to spend two pedal cyclists, the only way to promote the car rolled forward. Delaisse was riding his "pony cub" on the road test, many people have been ridicule. In 1840, England's blacksmith McMillan, in the Delaisse invention "pony cub" basis, has been improved. He was installed on the rear axle of the crank, and then connecting rod to the pedal crank and the front link and the steel front and rear wheel are used. Front large and small rear wheel. As a result, people's feet actually left the ground, trampled by the feet alternately moving into the rolling wheels. 1842, Macmillan ride this car, ran 20 kilometers a day. To 1861, the French Michaud father and son. Installed on the front that can turn the pedal board, the car in front of the saddle rack above. They put the car as a "bicycle" the elegant name, and in 1867 on display at the Paris Exposition.
Truly a modern form of bicycle was born in 1874. British Roson installed on the bicycle chain and sprockets, with rear-wheel rotation to drive the car forward.
1886 British mechanical engineer Stahly, from the mechanics, kinematics point of view to design a new bike style, equipped with front fork and brakes, front and rear wheels the same size in order to maintain balance and control into diamond-shaped steel cars frame, the first time the use of rubber wheels. Stahly has not only improved the structure of bicycles, but also restructured a number of machines used in proction of bicycle components, bicycle proction and promote the use of a large number of opened up a wide road, and he was later generations called the "father of a bike." Bicycle model designed by him and today has basically the same bike look like a.
Binoculars: the early 17th century, the Netherlands Scimitar 堡镇 an optical shop owner Kebisihe, in order to check the grinding out of the lens quality, to a convex and a concave mirror arranged in a line, through the lens look at the past and found that the distant church tower seemed to become larger and closer, and led to the discovery of the telescope principle. In 1608 he patented the telescope to proce their own, and to comply with the Government's requirements, building a pair of binoculars.
Camera: In 1830, Germany emerged as the camera's original shape. August 19, 1839 French painter Daguerre announced his invention of "Daguerre silver edition of photography," and so gave birth to the world's first portable wooden box camera. In 1947, Edwin 赫伯特兰德 Americans invented the Polaroid camera

As for the umbrellas, it was said that the Egyptians invented, but I remember the hours in a book to see, umbrellas originated in lotus leaf, an early 1000 BC in China many years ago, it has no intention of hair on their heads will be Xian Heye be able to avoid getting wet by rain, so there are craftsmen modeled on the shape of lotus leaf, with a cloth to make the "umbrella" but no change in the carry, and their descendants can be converted into its contraction (and this seems to be Luban descendants or his wife) This is the first umbrella. Later, the paper until the appearance, so make use oiled paper umbrella.

热心网友 时间：2023-10-08 14:26

Bicycle is a common means of transportation. It is popular among youngsters as well as alts. Bicycling not only conveniences our life but also brings us fun.What a pleasure it is to ride a bike in the breeze on a sunny afternoon! By the way, we can also strengthen our body by riding a bike.