The detection systemcould not press or squeeze the egg like the graders did, but what would happenif they could pull on the egg with a slight negative pressure, or vacuum?
Vacuum belt filter and belt press filter are the usual equipments of oil sludge dehydrating. But they have respective virtues and shortcomings.
真空带式过滤机和带式压滤机是污泥脱水的常用设备，但两者各有优缺点。
3
Ji 'nan air conditioning maintenance recommendations in cleaning, vacuum cleaner or plush soft brush, press the fin forward brush, remove dust and dirt attached.