Rotating device for electric drum, and equipped with pneumatictyre and steel wheel two walking wheels.
转动装置为电动滚筒,并配有充气轮胎和钢轮两种行走轮。
2
JOHN DUNLOP had a son who complained that his bicycle was bumpy to ride. So he invented the pneumatictyre in 1888.
约翰邓禄普的儿子曾抱怨地面崎岖不平难以骑行,之后他在1888年发明了气胎。
3
The tank bodys are connected by pneumatictyre unions and glass steel tubes, so they have the advantages of fine-looking, installation easily, reliable seel, and so on.