double helical pinion
[海运英汉词典]
double helical pinion人字(形)小齿轮
是什么意思,double helical pinion的解释,double helical pinion的翻译
[进出口英汉词典] double helical pinion
double helical pinion
[海运英汉词典]
double helical pinion是什么意思,double helical pinion的解释,double helical pinion的翻译
[进出口英汉词典] double helical pinion