Spiral Drill Collar F.N.
2个回答
spiral drill collar
网络释义
spiral drill collar:螺旋钻铤
F.N.很难翻译 应该是公司名的缩写
相关问题
spiral是怎么读
spiral staircase是什么意思
collar unlined
My father is a blue-collar worker but my mother is a -collar
英语翻译three of every four land drilling programs drill at leas
英语翻译 plastic collar
know the drill
collar-stand是什么意思
collar diameter是什么意思?
有很多的问题,during the ire drill和in the fire drill一样吗?