cone type roller bearing rock bit
[新英汉石油技术词典]
cone type roller bearing rock bit滚柱轴承锥形牙轮钻头
是什么意思,cone type roller bearing rock bit的解释,cone type roller bearing rock bit的翻译
[石油英汉词典] cone type roller bearing rock bit
cone type roller bearing rock bit
[新英汉石油技术词典]
cone type roller bearing rock bit是什么意思,cone type roller bearing rock bit的解释,cone type roller bearing rock bit的翻译
[石油英汉词典] cone type roller bearing rock bit