But physical excitation has a bad effect on the workability of fresh concrete.
但物理激发对新拌混凝土工作性造成一定的不利影响。
Fresh concrete gains strength most rapidly during the first few days and weeks.
新拌混凝土在开始几天和几周时间内强度增长很快。
Fresh concrete gains strength most rapidly during the first few days and weeks.
新拌混凝土在开始几天和几周时间内强度增长很快。
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