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- elassification of sand mass 砂体分类
- Then the equations for velocity distribution along vertical direction of the dry sand flow and that for velocity of sand mass sliding along the subface and top surface are derived. 将干砂流视为连续介质的流动,对干砂流的运动动力和阻力进行了深入研究,建立了干砂流垂线流速分布方程和干砂流体底面、表面滑动速度方程。
- The instantaneous moving mode of sand mass is divided into 4 types,namely: rolling,jumping,suspending,and running away,when the wind speed reaches the threshold velocity of sand-driving wind. 文章研究将沙粒在风速达到沙粒的起动风速时沙粒的瞬间起动方式分为4种,即:滚动、跳跃、悬浮和飞扬4种。
- The bond that binds the smugglers together is a rope of sand. 把走私犯联接起来的是条沙做的绳子，一碰就碎。
- There is a mass of sand on the playground. 操场上有一堆沙子。
- The young man has plenty of sand in him. 这个年轻人有足够的勇气。
- A grain of sand made my right eye tear. 一粒沙子弄得我右眼淌泪。
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- The truck dumped its load of sand on the driveway. 卡车将沙子卸在车道上。
- The surrounding country is a wilderness of sand. 周围是茫茫一片砂石地。
- The truck was carrying a load of sand. 卡车装运一车沙子。
- There is a grain of sand in his eye. 他眼里有一粒沙子。
- There is a mass of sand in the yard. 院里有一堆沙子。
- Can you help me to get this load of sand up against the tree? 你能帮我把这堆沙推到那棵树旁边吗？
- All he is actually doing is to weave a rope of sand. 他实际在做的一切毫无价值可言。
- We can see numberless grains of sand in a windy day. 在风天，我们能看到无数沙粒。
- They also impede backmixing of sand. 同时也可防止砂子的返混。
- She embedded the bulbs in a box of sand. 她把球茎栽在一盘沙土中。
- The prospector panned out bits of sand and gravel scooped from the bed of a stream. 探矿者淘选从河床里挖出的少量含金泥沙和砂砾。
- This lagoon "divider" consist of sand. 泻湖这个“分水岭”是由砂质物构成的。
