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1·By using metal mold casting, we can control mold temperature, infusing temperature, infusing speed to avoid defects of pore, cold partition, shrink and loose.

采用金属型立式浇铸，严格控制铸造工艺参数(模具温度、浇注温度、浇注速度)，以避免气孔、缩松、冷隔等缺陷的产生。

2·Use a scraper to remove the loose paint coating from the wall first and clear the dust, dirt, sand, oil and mold with a wet rag completely.

请将准备要处理的墙面进行清洁，用刮刀刮除松脱漆膜并以湿抹布清除粉尘，特别是污垢、灰尘、砂土、油渍或发霉等处皆请先彻底清理。

3·In this paper, the loose mixture with aluminum phosphate colloid as binder and metallurgical magnesia as hardening agent for shell mold was studied.

研究了以磷酸铝为粘结剂、煅烧冶金镁砂为硬化剂的壳型松散料。

4·The familiar structures of loose core and ejector of hydrocylinder in injection mold were introduced. The calculating method of selecting hydrocylinder and the key points in using it were discussed.

介绍了液压油缸在注塑模具中常见的抽芯及顶出结构，并对选取油缸的计算方法和使用要点进行阐述。