pendulum drill assembly
[新英汉石油技术词典]
pendulum drill assembly钟摆钻具组合
是什么意思,pendulum drill assembly的解释,pendulum drill assembly的翻译
[石油英汉词典] pendulum drill assembly
pendulum drill assembly
[新英汉石油技术词典]
pendulum drill assembly是什么意思,pendulum drill assembly的解释,pendulum drill assembly的翻译
[石油英汉词典] pendulum drill assembly