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- sand grain migration 砂粒运移
- Let it become the most concealment sand grain in our heart bottom. 让它成为我们心底最为隐蔽的沙粒。
- Stars are as thick as the sand grains on a beach. 恒星像海滩上的沙子那样密集。
- If we could actually see the path described by a particle, such as a sand grain in the rock. 假如实际上我们能看见由一个象岩石内部的砂粒这样的微粒绘出的轨迹，
- Some sand grains jammed the door. 有些沙子把门卡住了。
- If we could actually see the path described by a particle,such as a sand grain in the rock. 假如实际上，我们能看见由一个象岩石内部的砂粒这样的微粒绘出的轨迹。
- On this scale the moon would be scarcely more than a dust speck about 1cm from the sand grain. 照这样的比例尺度，月球将是仅离小沙粒一厘米远的一颗尖埃微粒。
- The sea gull unfolds pair of wings , sliding out a consummate arc in azure sky, exquisite sand grain of white turns motion over and over under dark blue seawater outwash. 海滩边的鹅卵石被洗得格外明净。
- We must screen the sand grains out of the silver sand. 我们要把细沙中的沙粒筛出去。
- The analytical results reveal that the sand grain of northeastern Sahara was formed under the river lacustrine deposition environment during warm humid climatic condition and had been reformed by wind action later. 分析结果说明非洲撒哈拉沙漠东北部沙漠砂的形成与河流作用有关。
- In accordance with downhole tubing sticking by sand burial accident, this paper proposes hollow rod sand washing after analysis of downhole string structure and hydraulic calculation of sand grain. 针对处理井下油管砂埋遇卡事故作业中出现的技术问题,在分析井下管柱结构及砂粒的水力计算的基础上,提出了空心抽油杆冲砂工艺处理措施。
- The results showed that sand grain content in surface soil of Pinus massoniana forest land was highest among 4 kinds of forest lands and that of natural evergreen broad-leaved forest was lowest. 结果表明，在4种林地中，表层土壤砂粒含量以马尾松林地为最高，天然常绿阔叶林地最低；
- The results show that because of the effect of account of vertical fluctuating velocity,the trajectories of sand grain involving the effect are differ obviously from that not involving the effect. 结果表明,由于沙粒垂向脉动速度的影响,沙粒的轨迹与不考虑其垂向脉动速度的情形存在明显不同。
- Based on the “saltation\|diffusion” concept for sand grain motion in air,an experimental study is carried out on the longitudinal profiles for sand falling flux after certain cross\|section. 在5种风速和2种沙粒粒径条件下进行了风洞水平集沙实验,发现沙粒降落量的分布特征由参考点沙粒降落量、沙粒平均最大跃移长度和“跃移扩散”指数三个参数共同决定。
- As far as the forces acting on fines are concerned, the hydrodynamic and colloid forces between fine particle and sand grain surfaces are analyzed to determine the criteria for mobilization of fines. 因此储层中可运移的微粒不仅仅是粘土矿物微粒,还包括石英、长石等非粘土矿物微粒。
- A grain of sand made my right eye tear. 一粒沙子弄得我右眼淌泪。
- There is a grain of sand in his eye. 他眼里有一粒沙子。
- For sand grains in water, the change in the direction of light is smaller than in air. 在水里的沙,光的方向变动比在空气小。
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- A wind of a velocity of 5 m/s cannot carry with it sand grains whereas one blowing at a velocity of 5~8 m/s stirs up ripples on the surface of the sand sea. 每秒5米以下的风速是不会携带沙粒的。而每秒5至8米的风却会激起沙海的涟漪。
