Oil filter's role is to filter out the air compressor for oil metal particles, the impurities, so as to make into the host is very clean oil, to protect the host safety operation.

油滤芯的作用是滤除空压机专用油中的金属颗粒、杂质等，使进入主机的油是非常干净的，以保护主机安全运行。

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Causes of fire during the manual clean-out operation of oil tanks are analyzed, and corresponding preventive measures are put forward.

分析了油罐人工清洗作业过程时容易引发火灾的原因，并提出相应的预防火灾措施。

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Some versions require a second air line for automatic cylinder operation, clean-out or shut-off.

部分喷嘴使用二级液体管线进行自动气缸操作、自动清洗并自动关闭。

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Ricey and Gaz both have MCL damage and Kyle had an operation to clean out his knee.

BBC: Geoff Griffiths column

The report comes only days after Saudi Arabia's Aramco revealed it had completed a clean-up operation after a virus knocked out 30, 000 of its computers.

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"What comes from the Operation Clean Halls case is going to result in a major step toward dismantling the NYPD's out of control stop and frisk practices, " she said.

WSJ: NYPD program patrols inside private buildings