roller bit
[新英汉石油技术词典]
roller bit牙轮钻头
是什么意思,roller bit的解释,roller bit的翻译
[专利英汉词典] roller bit
[公路科技英汉词典] roller bit
[冶金学英汉词典] roller bit
[地质英汉词典] roller bit
[机械英汉词典] roller bit
[石油英汉词典] roller bit
[能源英汉词典] roller bit
[进出口英汉词典] roller bit
[造纸英汉词典] roller bit