valve and valve gear是什么意思 valve and valve gear在线中文翻译

valve and valve gear

中文翻译
1
阀及阀动装置
相关单词
valve and gear

相关单词辨析

or: 或者,否则,常用于否定句中 I don't like apples or bananas. Hurry up or you'll miss the bus.
and: 并且,Hurry up and you'll catch the bus.