coal bit 中文意思是什麼
coal bit
解釋
旋轉鉆煤鉆頭-
Drill bit for coal cutting
電煤鉆頭 -
Diamond core bit for coal drilling
煤田鉆探金剛石取心鉆頭 -
I ' ve recently purchased a carburetor ? ? a device by means of which a wee bit of coal can release a large amount of energy
我最近購買了一臺汽化裝置,它是一種用於從微量的煤中釋放出大量能的裝置。 -
Application of pdc bit in sihe mine coal seam predrainage drilling
鉆頭在寺河煤礦瓦斯預抽放鉆井中的應用 -
This essay expounds the connection amany person 、 machine and environment in the person - machine - environment system, analyzes the effect that coal mine environment factors in the bit produces to person, and formulates the effect it produces on the system
闡述在人?機?環境系統中人、機器與環境因素三者之間的關系,分析煤礦井下高溫環境因素對人產生的影響,得出人體生理所需的適宜溫度及人體的可耐限度並用公式說明環境因素對生產系統產生的影響。
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