The inner case (56) is formed into a bag shape with a deformable film sheet and encloses a colorant.
内壳（56）利用可变形薄膜片形成为袋状并封入着色剂。
Described in the article is the trial of the dual-liquid centrifugal casting process to produce clad tube with carbon steel as outer case and hi-chromium casting iron as inner case.
介绍了采用双液复合离心铸造工艺浇铸以碳钢为外套、高铬铸铁为内套的双金属套筒的工艺试验情况。
Described in the article is the trial of the dual-liquid centrifugal casting process to produce clad tube with carbon steel as outer case and hi-chromium casting iron as inner case.
介绍了采用双液复合离心铸造工艺浇铸以碳钢为外套、高铬铸铁为内套的双金属套筒的工艺试验情况。
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