主铁水沟;吊顶主龙骨
it is seen that the material passes through the sprue, main runner, branch runners and gate before entering the impression.
从图中可见,塑料在进入型腔之前经过浇口套,主流道,分流道和浇口。
application of fast dried castable in the only sand port of main runner in bf
快干浇注料在高炉无备用主沟砂口上的应用
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