活動鉆頭 的英文怎麼說
中文拼音 [huódòngzhēntóu]
活動鉆頭
英文
bottoming type bit-
Special thermowell is manufactured from drilled bar stock to withstand pressure morethan 6. 4mpa, together with convenience in installation for movable connector
特製套管帶活動連接頭,安裝方便,整體鉆孔縮徑式套管結構,耐壓6 . 4mpaBut the icelandic outfit hopes to drill to depths of 4km or more, to get closer to the magma that rises towards the surface along local faultlines
但是,這批冰島的工作人員希望能夠將鉆頭深入到地下4公里或更遠處,這樣可以更加接近沿局部的斷層線[ 7 ]向地表活動的巖漿。
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