sand coarse aggregate ratio
... 砂石的石灰含量;骨料的石灰含量：aggregate lime content 砂石比：sand coarse aggregate ratio 砂石;骨料;碎石：aggregate ...
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砂石与石灰比例 aggregate-to-lime ratio
砂石与水泥比例 aggregate-to-cement ratio
块石砂浆比 rock slurry ratio
地层砂与砾石粒度比 formation-to-gravel size ratio
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