关于自行车的英语作文自行车的由来六十个单词 就够了 不用太多 这样背不下来

关于自行车的英语作文自行车的由来六十个单词 就够了 不用太多 这样背不下来
关于自行车的英语作文
自行车的由来
六十个单词 就够了 不用太多 这样背不下来

关于自行车的英语作文自行车的由来六十个单词 就够了 不用太多 这样背不下来
The bicycle is the most successful human inventions of a human machine,is composed of many simple machines
Complex machinery.
In 1790,there were French,his love for brains.One day,he was walking a street in Paris,because the world over the previous rain,the way a lot of rain plot,it is good to go.Suddenly,a carriage came straight from behind,the road is fairly narrow and very wide carriage,Xifulake fortunate not to hide to avoid being hit by a car,or been splashed all over a mud and rain.Others see,feel sorry for him,but also angry and Zhi Ma,want to cry carriage stopped,unreasonable representations.Xifulake has murmured:"Do not cry,do not cry,let them go." Carriage gone,and he just stood roadside.He was thinking:Road so narrow,so many pedestrians,why can not the coach what the structure to facilitate some changes?Should be cut off half of the carriage along the four wheels,two wheels into a before and after the ......he such a thought,home on hands-on design.After repeated tests,the first aircraft in 1791 to travel by "Trojan wheel" car made out.Zhe Liang wooden cart with two wheels around the middle attached beam,a bench top security,like a toy-like.As the car has not drive chain,by the rider pedal force in their legs,the car can move forward slowly,but also without steering the car,only go straight,do not turn and go riding for a while on the tired sweaty .
The emergence of new stuff just is not always so perfect.Xifulake not discouraged,he continued to try to improve.Unfortunately,the long illness he died.
1816,in Germany there is to see in the woods His names is delaxis,his daily-east of this one from the forest,wandering the West's another piece of wood,year after year.He thought:If the person sitting in the car,the stop-go,anywhere,not very handsome it?Delaisse began making wooden wheel,made almost look like Xifulake.However,adding a front wheel on the handlebar control the direction of child,to change the way forward.But cycling is still to use two feet,about what step to push off the ground,to push the car roll forward.When dries out test riding time along the way were many people laughing.Still,he loves his creation of this "lovely pony cubs." Wandering in the cycle when one dries over an open carriage,the driver laughed at his car,he said slowly,so he and the driver said:"Believe it or not my car faster than your horse" So the two of them play the bet.Distance from the village of West-east to a back and forth,results dries faster than the driver a whole more than one hour.
In 1840,England's blacksmith McMillan,and got a run-down "pony cute cubs." He installed on the rear axle crank,and then crank and connecting rod to connect the front of the pedal,and both front and rear wheels with iron,large front and rear small.When the rider stepped fixed pedal,the car will be up on their own campaign,ran forward.Thus,it makes the rider's feet off the ground really,to walk,alternating stepping move into the wheel rolling,speed greatly improved.1842,Macmillan ride this car,ran 20 kilometers a day,because they do not care,cycling too fast,hit the road a little girl,it was the police to seize,and fines.The charges of "brutal ride."
In 1861,France Michaud and his son,originally a carriage repair Carpenter job,they can be installed in front of the pedal plate rotation; car saddle rack above the front wheel,so unless the bike's technology,especially sophisticated,or instability on the grasping handlebars,fell off from the car.They Zheliang two-wheelers as a "bicycle" of James,and in 1867 at the Paris Expo exhibition,the audience an eye-opener.
In 1869,Renault UK after seeing the bike in France,that car is too heavy,and began pondering how to light a number of bike do.He used to tightening wire spoke wheel rim as; the same time,the use made of thin steel bars to the frame,the car's front wheel larger smaller rear wheel.Thereby reducing some of its own weight bicycle.Starting from Xifulake until Renault,who made 5 types of bike with a larger difference between the modern bicycle.
Truly modern form of bike is born in 1874.British Roson in the year,the ingenuity in the bicycle chain and sprockets on the uploading,with rear-wheel rotation to drive the car forward.But still the big front wheel,rear wheel small,do not seem as coordinated and unstable.
In 1886,the United Kingdom John.K.Stahly,a mechanical engineer,from the mechanics,kinematics point of view to design a new bike style bicycle fitted with a fork and brakes,front and rear wheel size the same in order to maintain balance and control into diamond-shaped steel frame for the first time using a rubber wheel.Stahly not only improves the bike's structure,but also restructured a number of machines used in production of bicycle parts for bike's mass production application of interest to promote the prospects opened up wide,and he was later known as the "father of a bike." Stahly bike designed with today's models look basically the same as a bicycle.
In 1888,Ireland's veterinary Dunlop,from the expansion in the treatment of bovine Stomach inspiration,he used to water the garden around the house in a rubber tube into a round stick,play full of gas,mounted on bicycle wheels,to participate in Cycling competition,actually among the best,has aroused great interest.Pneumatic tire is a landmark in the history of bicycle development initiative,it increases the flexibility of the bicycle,not because of road roughness and vibration; the same time greatly improve the speed and reduce friction with the road wheels.Thus,fundamentally changed the bike's riding performance,improved bicycle use function.
Also 1888,Coventry City,John.K.Stahly produced the first modern bike --- a "safety" bicycle.Its main characteristic is using diamond-shaped frame,so the body has a higher stiffness and strength,the rear wheels with a chain drive,and take direction directly through the front fork.

l likemybicycle

l have a bicycle . lt is red . l like it very much.

lliekbiek.