If you can eliminate control failures and worn equipment as causing the contamination, look next at system configuration, material characteristics, and process conditions.
如果你能消除引起污染的控制缺陷和破损设备，接着你要看看系统配置、材料特征和工艺条件。
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One of the main measures of improving IAQ is to control contamination sources strictly Electrostatic air cleaners are a type of purifying equipment widely used to remove indoor air contaminants.
This article has dealt with the selection of grease removal, phosphating residue removal and purified water generating equipment, and the control of dropping time and angles, and grease contamination.