cementer 中文意思是什麼
cementer
解釋
固井工-
Discussing the characters and foibles of common friends is a great sweetener and cementer of friendship
談論共同友人的性格和缺點是維系友誼最好的甘美物和接合劑 -
The hsc - a hydraulic stage cementer features inner closing structure, opening through pressure difference. the closing plug drives the closing sleeve down and then shut circulation ports
型壓差式雙級注水泥器為內關閉式結構，不需投重力塞，通過液體的壓力差打開循環孔，關閉塞帶動關閉套下行關閉循環孔。
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