double compression
... direction of pressing 压制方向 double pressing 两次压制; 双重压榨 dry pressing 半干压制; 干压成型法 ...
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两次压制法 double-press process
气门头可通过一次压制和烧结、两次压制和烧结、锻造和机加工、锻造和烧结及动磁压制成形和烧结而制成。
The valve head may be made by single press and sintering, double press and sintering, forging and machining, forging and sintering, and dynamic magnetic compaction and sintering.
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