... 保 护 罩 Cap 密封面材料 Sealing surface of material 带扳手弹簧微启式安全阀外形尺寸和连接尺寸 Dimensions (mm) ...
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Seepage control in dam, design of freezing resistance for concrete face slab, new caulking water sealing material and surface coat on face slab are mainly presented.
本文重点介绍坝体渗流控制，混凝土面板抗冻设计，及新型嵌缝止水材料，面板表面涂料的研究。
Valve seat plate and the sealing surface for the oblique cone structure, in the oblique conical surface of valve plate welding temperature, corrosion resistant alloy material;
阀板与阀座的密封面为斜圆锥结构，在阀板斜圆锥表面堆焊耐温、耐蚀合金材料；
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