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- cement testing sand 水泥试验用标准砂
- Controls on the shape of aeolian ripple during its development are investigated experimentally in a wind tunnel.The experiments were conducted with one test sand and four different stream velocities. 摘要在四种风速条件下，对沙纹形成过程中的形态变化进行了风洞实验研究，讨论了沙纹宽度、沙纹迎风坡宽度、沙纹背风坡宽度、沙纹高度和沙纹指数与风速和输沙量的关系。
- Concrete is made of cement, sand, stone and water. 混凝土是由水泥，砂子石头和水混合做的。
- NBMI Quality Test Center of cement test equipment 建材工业水泥检验专用仪器设备质量监督检验测试中心
- Concrete is made of cement,sand,stone and water. 混凝土是由水泥、砂子、石头和水混合做的。
- Concrete is a mixture of sand and cement. 混凝土是沙和水泥的混合物。
- Mix the sand and cement together. 把沙子和水泥混合在一起。
- The cement should have the consistency of wet sand. 水泥应当具有湿沙的坚实度。
- The building is made of hydraulic cement. 大楼是用水硬水泥建造的。
- We are testing the efficacy of a new drug. 我们正在测试新药的功效。
- Mix the sand and cement together,then add water. 把沙子和水泥混在一起再加水.
- Cement output next year would be57 million tons. 明年的水泥产量(将)有5700万吨。
- The front of the brick house was faced with cement. 这栋砖房的正面抹了一层水泥。
- Our object is to further cement trade relations. 我们的目标是进一步加强贸易关系。
- The sack of cement hit the ground with a thump. 水泥袋砰的一声落在地上。
- They were testing a new weapon then. 当时他们在试验一件新武器。
- The cement will set in a few hours. 水泥几小时后就会凝固。
- Good teaching and good testing are closely related. 出色的教学工作与完善的测试制度密切相关。
- The device had undergone extensive testing. 这种装置经受过广泛的试验。
- 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。
