rock drill

常见例句

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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Rock-drill operators, who were at the heart of the strike, got more than 11, 000 rand a month: not quite the 12, 500 they had been demanding, but close enough.
ECONOMIST: South Africa’s strikes
When they get back, the space vehicle will hopefully have provided enough data to pinpoint a potential drilling area so it can drill, collect and analyze rock samples using onboard tools -- a feat never-before attempted on Mars.
ENGADGET: Curiosity spends holidays in Yellowknife Bay, immortalized on special Foursquare badge
Just before halting its investigations, the nuclear-powered rover used the drill at the end of its 7-foot-long robotic arm to bore into a rock near where it landed and analyze the powder.
NPR: Mars Rover Curiosity Stands Down After New Problem