工作压力由液压加压，弹簧保压。
变量泵可在长的保压时间内节省能源。
A variable displacement pump could save energy during the long holding time.
降低注塑压力，减少成型和保压时间。
Lower to note the pressure of mold, reduce to model and protect to press time.
保压间就是产品重量开始稳定时的时间。
The holding time will be the time when the part weight start to be stable.
和高压保压法相比，本法具有现实的工业应用前景。
Compared to high pressure injection molding, the method has good perspective in practical application.
保压时间太短：重量不足，产品内部空洞，尺寸偏小。
Too short holding time: Not enough weight, empty inside, small dimension.
在同样的压型压力下，保压时间对合金性能的影响较弱。
The influence of dwell time for alloy performance is weak comparatively.
在同样的压型压力下，保压时间对合金性能的影响较弱。
The influence of dwell time for alloy performance is weak comparatively.
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