The water cement ratio decides concrete's strength.
水灰比决定着混凝土的强度；
In cemented filling method, to choose a proper water cement ratio is an important work.
在胶结充填采矿法中，选择一个恰当的水灰比是一件十分重要的工作。
High water cement ratio during construction and low water cement ratio during solidification are realized.
实现了混凝土大水灰比施工、小水灰比固化。
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