Lots of field applications show that this apparatus can effectively reduce drilling cycle, decrease Labour strength and ensure drilling safety.
大量现场应用表明，该装置能有效地缩短钻井周期，降低工人的劳动强度，保证钻井安全。
A rise in Labour intensity must increase strength consumption and decrease work efficiency.
强度增大必然导致劳动者的体力消耗增加，劳动效率下降。
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