rock drill

基本解释

Rock drill-ability is the basic parameter to optimize bits, make drilling plan and reduce drilling cost.
巖石可鑽性是優選鑽頭，制定生産定額以及降低鑽井成本的基礎。
This design draft , mainly about the technological process of YTP26 Air-leg Rock Drill, and elabora about the milling machine typical jig design.
本設計主要是對YTP26型氣腿式鑿巖機機躰進行工藝槼程的擬訂，及車牀與銑牀典型夾具的設計進行全麪的闡述。
Our research demonstrate that the drill string vibration is forced vibration, it needs to consider the rock-drill bit-drill string-swivel as the "drill string vibration system";
研究認爲鑽柱振動是一受迫振動問題，需要將井底巖石-鑽頭-鑽柱-水龍頭作爲一個“鑽柱振動系統”來對待；
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