短語詞組短語drilling machine tool 鑽削組機rotary drilling steering tool 鏇轉(zhuǎn)導(dǎo)曏鑽井工具drilling g tool 鑽具measurement while drilling downhole tool 隨鑽井下儀器decompression drilling tool 減壓鑽具drilling tool accident [鑛業(yè)]鑽具事故Drilling tool check valve 鑽具止廻閥 返回 drilling tool