短語詞組短語nominal water -cement ratio 名義水灰比total water -cement ratio 縂水灰比net water -cement ratio 淨(jìng)水灰比low water -cement ratio 低水灰比real water -cement ratio 真正水灰比maximum water -cement ratio 最大水灰比concrete water -cement ratio 混凝土水灰比Law water -cement ratio 水灰比律water -cement mass ratio 水灰質(zhì)量比 返回 water-cement ratio