... 冷却用料chill scrap 冷砂工场sand cooling plant 冷室压铸机cold chamber die casting machine ...
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However, the foundry plant of tsinghua university lacks old sand with high temperature and can not carry out test of cooling control.
但因清华大学铸造厂缺乏温度较高的旧砂，以致无法进行降温控制效果的试验。
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