Through the control of dust pollution, the working environment of mine worker is improved, the clean production is realized, and the incidence of the occupational disease is reduced.
通过对粉尘污染的治理，改善了矿山工人的作业环境，实现清洁生产，降低了职业病的发病率。
In order to improve working environment of hard alloy for mine, replacement of sand blasting by ball milling handling technology is put forward.
对矿用硬质合金的热处理和时效处理，通常采用喷砂工艺，为改善劳动环境，提出球磨处理技术取代喷砂，取得了明显的技术经济效。
Mine recovery ship is a naval auxiliary ship, and is also an engineering boat. It has its special working environment.
捞雷船属于海军辅助舰船，它是一种工作船，由于它的作业特殊，捞雷船就具有其独特性。
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