发布时间:2025-01-20 16:31:02
您要问的是超前止水需要留置试块吗?需要。超前止水带在安装时需要进行试块调整,试块是将超前止水带的末端系上一定重量的铅块或其它适当物品,以便测试漂浮的效果。
北京弘力天创成型技术研究中心原北京市宏利有色金属铸造厂怎么走
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