periodic cleaning meaning in English

定期清理

The need for periodic cleaning and flushing of cooling passages is eliminated
同时，也避免了对冷却通道进行定期的清洗和冲刷。
The system has the following concrete effects . it makes a substantial contribution to reducing overall costs at metal processing work sites by reducing the costs of cutting liquids , cleaning liquids , periodic cleaning and year - end cleaning , as well as by reducing the need for total exchanges of cutting liquid in summer and waste cutting liquid processing expenses , etc
具体效果有,削减切削液和洗涤液的费用削减定期清扫和年末清扫经费削减夏季切削液全部更换量削减切削液和洗涤液废液处理费用等,对削减金属加工车间的成本可以起到极好的作用。