- 1. offset cone bit: 移轴牙轮钻头
... S-辛基油 offset cone bit 移轴牙轮钻头 offset drilling 内插钻井 ...
dict.youdao.com - 2. offset single cone bit: 偏心单牙轮钻头
dict.youdao.com - 3. offset t cone bit: 移轴牙轮钻头
dict.youdao.com - 4. mono-cone bit with offset: 偏心单牙轮钻头
dict.youdao.com