钻井用钢丝绳通过天车和游动滑车以滑轮组的形式获得机械上效益。
The drilling line is reeled over the crown block and traveling block to gain mechanical advantage in a "block and tackle" or "pulley" fashion.
为更换缠绕在天车和游动滑车周围的钻井钢丝绳用。
To replace the drilling line wrapped around the crown block and traveling block.
石油用钢丝绳是油田重要钻井器材之一。
Oil-field wire rope is one of the important drills for oil-field.
石油用钢丝绳是油田重要钻井器材之一。
Oil-field wire rope is one of the important drills for oil-field.
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