从油中分离石蜡的过程，首先进行冷冻(帮助生成石蜡晶体)，然后用板框式压滤机在压力下进行过滤。
The process of separating wax from oil by first chilling (to help form wax crystals) and then filtering under pressure in a plate and frame press.
板框式压滤机在过滤过程中，由于实际中的各种因素，会对滤板产生侧压力。
Owing to various kinds of factors, plate & frame filter press will generate side pressure to the fil- terplate in the course of filtering.
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