sand grain

The equilibrium sand transport is simulated by Lagrange model combined with the probabilistic distributions of initial speed and angle of ejection sand grain in this paper.

本文用Lagrange方法结合起跳沙粒初始运动状态分布模拟了稳态风沙输运过程。

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Mother was always particularly fond of "A Grain of Desert Sand" and it is through her excellent memory that we have been able to include it.

母亲特别喜欢“沙海一粟”，凭着她惊人的记忆力，我们才能把它记录下来。

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There is a grain of sand in his eye.

他眼里有一粒沙子。

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Prevention Measure Of Air Bladder And Sand Grain At Concrete Surface Of Railroad Bridge

铁路桥梁混凝土表面气泡和砂纹的防治措施

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The grain size distribution in Bohai sediment was that fine sand and arenaceous powder sand dominated tideland to clayey powder sand dominated Bohai Bay.

渤海湾沉积物粒度分布从潮间带的以细沙和砂质粉砂为主，逐渐过渡到渤海湾大面站的粘土质粉砂。

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They can be as small as a pea or a grain of sand.

它们可能就像一粒豌豆大小或一粒沙子那么大.

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Coarse Graded Bituminous Concrete Raw Materials Quality Control A Grain of Sand

粗粒式沥青混凝土原材料的质量控制

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Every brick, every tile, every part of the Great Wall, every grain of sand and every seashell can tell endless ancient stories and legends.

每一段长城古道都能诉说风雨沧桑的巨变；每一粒海沙都凝结着远古的尘埃；每一只贝壳都能讲述一个动人的传说。

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The fluorocarbon resin emulsion sand texture paint with excellent performance was prepared using synthesized fluorocarbon resin emulsion as binding agent, and sand grain, fine stone particle and stone powder as aggregate, selecting proper aggregate grading, aggregate/ base material ratio and various additives.

采用合成氟树脂乳液为粘结剂，以砂粒、石材微粒和石粉为骨料，通过选择适当的骨料级配、骨料/基料比以及各种助剂等，制成了性能优异的氟树脂乳液砂壁状建筑涂料。

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The stuff, typically the size of a sand grain, vaporizes in the atmosphere.

的东西, 一般大小的砂粒, 在大气中蒸发.

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The threshold velocity of sand is influenced by many factors in coastal zone, but the grain diameter and moisture content of sand grain are the dominant factors.

在海岸带，沙粒粒径和水分含量是决定沙粒起动风速的最主要因素。

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a grain of sand

一粒沙子

《牛津高阶英汉双解词典》

Sand grain size is the main effect factor on perforation penetration depth.

砂子粒径是影响射孔侵彻深度的重要因素.

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Otherwise there will be a large error between the value calculated by Stokes formula and the actual value under the condition of bigger sand grain and lower fluid viscosity.

当砂粒较大、液体粘度较小时，用斯托克斯公式得出的计算值与实际值相差很大。

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According to the analyses of forming causation of air bladder and sand grain at concrete surface of railroad bridge, this paper studies it from five aspects of bridge prefabricate craftwork, and puts forward relevant prevention technique measure.

通过对铁路桥梁混凝土表面气泡和砂纹形成原因的分析，从桥梁预制工艺5个方面进行试验研究，并提出了相应的防治技术措施。

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