Filtration operation is in constant pressure differentials, called the constant pressure filter.
过滤操作是在恒定的压差下进行，称为恒压过滤。
This paper describes a new technology for water supplying system with constant pressure. It is verified that the system has obtained good economic and social benefits through time sharing operation.
介绍运用变频调速恒压供水技术，根据用户需水量变化情况，分时间段设定合适的压力值进行操作，取得了良好的经济和社会效益。
Through the operation panel, not only can realize the fixed distance and constant pressure of two kinds of forming process, and can realize a pad, pad free, top three cycle process.
通过操作面板选择，不仅可实现定程、定压两种成形工艺，而且可实现有垫、无垫、顶出三种工艺工作循环。
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