... air duct 通气管道 air entrained agent 加气剂 air entrained cement 加气水泥；伴水泥 ...
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The air entraining concrete's shrinkage and creep were less than concrete which not content air entrained agent, and the durability performance was improved obviously.
混凝土的收缩和徐变较不引气混凝土相比较小；耐久性能明显改善。
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