labour intensity of workers
labour intensity of workers
工人劳动强度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Thus it will guarantee the primary placer gold sampling and reduce the Labour intensity of workers, in order to raise the drilling efficiency.
从而能保证取出原生矿样，并降低工人的劳动强度，实现钻进的高效率。
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