轮胎内胎 meaning in English

tire tube
tube

The physical properties test method for inner tube of aircraft tyre
航空轮胎内胎物理性能试验方法
Test method of the physical properties for inner tube of aircraft tyres
航空轮胎内胎物理性能试验方法
Inner tube of pneumatic tyres - part 1 : inner tube of automobile tyres
充气轮胎内胎第1部分:汽车轮胎内胎
Tyres and wheels - tyres - code of practice for the storage of tyres , inner tubes and flaps
轮胎和车轮.第1部分:轮胎.第8节:轮胎内胎和垫带保存实用规程