在线观看亚洲视频-久操伊人网-成人亚洲精品-偷拍亚洲精品-美国做爰xxxⅹ性视频-丁香六月婷婷-性生交大片免费视频-一区二区亚洲-新91视频在线观看-日韩高清一区二区-h片在线观看免费-成人激情社区-久久久久色-久久人人爽爽人人爽人人片av-欧美日韩二区三区-爱情岛论语亚洲入口

Tire wear is mainly caused by the friction between the tire and the ground. With the changing driving conditions of semi trailer, such as starting, turning, braking, etc., fast turning, sudden starting and hard breaking will lead to rapid tire wear. In addition, tire wear is also related to the

The processing of all steel radial tires requires a high level of precision. In order to ensure every part to fit the positioning accurately in the forming operation and to make the belt layer fit and formed under the condition that the belt layer basically maintains the design dimensions of fin

The tire is the only part of a vehicle that is in contract with the road, and it must keep balance between traction, comfort, durability, energy saving and total cost. In order to satisfy those conflicting needs simultaneously, the design and manufacture of a tire may be much more complex than e

6. Industrial production of tires During the period from 1913 to 1926, the invention of tire cord and carbon-black tire technology laid the foundation for the development of tire industry. Meanwhile, because of the standardization of tire’s outer edge and the gradual improvement of manufact

What is A Diagonal? The so-called diagonal tyre refers to the tyre whose cords are arranged diagonally, hence its name. The entire carcass is composed of multiple layers of diagonally crossed nylon cords. The tyre crown and sidewall belong to the same ply, which makes the tyre stress concentr

1. Early tire: In the early era, tires were made of wood, iron or other materials. The first hollow wheel was invented by a British named Robert Thomson in 1845, and he proposed that inflating the elastic bag with compressed air can ease the vibration and blow during movement. This kind of tire