fuel element cleaning 燃料元件清洗
Off-line Filter Element Cleaning 离线化学清洗
self cleaning filter element 自动清洗式滤芯
The air filter element should be replaced after cleaning 3 times, and the cleaning cycle can be determined by the air quality of the usual control area.
空气滤芯通常在清洁3次后就应替换新的，清洁周期能够由平时驾驭区域的空气质量而定。
In this paper, the theoretical model of cross-flow of grain cleaning fan on farm is proposed by using the finite element method.
本文应用有限元方法，建立了横流式农用清选风机内部的气体流动数值模拟模型。
The portable oral care system has an oral care implement with a handle and a head with a tooth cleaning element.
便携式口腔护理系统具有带有手柄的口腔护理器具和带有牙齿清洗元件的头部。
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