But regular cleaning will keep the metal from rusting.
但定期的清洁能使金属免于生锈。
For regular cleaning, dilute 1 part product to 6 parts water.
对于经常清洗，稀释1部分产品6个部分的水。
Regular air intake system cleaning.
定期进行进气系统的清洗。
The operation of tank cleaning is a regular work in oil tank farm with danger.
清罐作业是油库一项经常性的工作，具有较大的危险性。
The operation of tank cleaning is a regular work in oil tank farm with danger.
清罐作业是油库一项经常性的工作，具有较大的危险性。
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