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什么是气硬冷芯盒法?
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2020-08-31 15:45
什么是气硬冷芯盒法?
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2020-08-31 15:45
气硬冷芯盒法制芯是将树脂砂填入芯盒，然后吹气硬化制成砂芯。
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2020-08-31 15:45
期待高手指点！！！
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