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关注：1
2013-05-23 12:21
求翻译：Injection and CompressionWhen the stopper opens, as soon as the molten metal fills the flask, a trigger is launched to the over pressure valve which will make the gas flow enter smoothly and quickly to compress the tree during the solidification phase to reduce shrinkage porosity是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Injection and CompressionWhen the stopper opens, as soon as the molten metal fills the flask, a trigger is launched to the over pressure valve which will make the gas flow enter smoothly and quickly to compress the tree during the solidification phase to reduce shrinkage porosity
问题补充： |
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