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。
Concrete is made of cement, sand, stones, and water.
混凝土是用水泥、沙、石子和水制成的。
They used waterproof cement to prevent water from seeping through the roof the tunnel.
他们用防水的水泥阻止水从坑道的顶上渗入。
They used waterproof cement to prevent water from seeping through the roof of the tunnel.
他们用防水的水泥防止水从隧道顶部渗入。
Cement, water and sand are mixed to make concrete.
水泥，水，和沙搅在一起便是混凝土。
Concrete is made of cement, sand, stone and water.
混凝土是由水泥，砂子，石头和水混合而成。
Such silica can react when added to cement in the presence of water.
这样的二氧化硅在存在水的情况下加到水泥中时。
Concrete is composed of cement, sand and gravel mixed with water.
混凝土由水泥、砂、石子与水掺和而构成。
A mixture of dry cement and water.
干水泥与水的混合物。
Concrete is made of cement, sand, and gravel mixed with water.
混凝土是由水泥、沙子和碎石并和水混合而成的。
Mix the sand and cement together, then ADD water.
把沙子和水泥混在一起再加水。
Hydrophilic fibres on the opposite surface aid hydration by drawing water into the cement.
相对表面上的亲水性纤维通过把水吸入水泥来帮助水合。
Concrete consists of cement, sand and gravel, mixed with water. .
混凝土是水泥、沙子和碎石加水构成的。
P92 Concrete is a mixture of water, sand and gravel, and Portland cement.
混凝土是由水、沙和砾石、波特兰水泥拌合而成。
Concrete is made of cement, sand, stones and water.
混凝土是用水泥、沙石和水制成的。
Cement job quality has very important effect on normal production and life of oil-water Wells.
固井质量对油气水井的正常生产及其寿命影响巨大。
Acid-resistant glass cement is composed of water glass, curing agent and powder filler.
玻璃耐酸胶泥由水玻璃、固化剂及粉状填料组成。
The technical properties and application of water-reducer of cement are introduced.
文章中介绍了混凝土减水剂的各项技术指标及其应用价值。
The technical properties and application of water-reducer of cement are introduced.
文章中介绍了混凝土减水剂的各项技术指标及其应用价值。
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