砂的例句大全

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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In the trial range, the effect of sand percentage and coarse aggregate gradation on the strength of concrete is not significant. And they could be certained by the pumpability and other technical indicators.

在试验选定的研究范围内，砂率和粗骨料级配则对混凝土的强度影响不显著，可根据混凝土可泵性等其它技术指标确定其合理取值范围。

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The conclusion is as follows: 1. Aggregate grading and sand cement ratio have obviously influence on the strength. And the consideration should involve strength, construction operation and economy.

集料级配和砂胶比对强度存在显著的影响，应综合考虑强度、施工操作性和经济性加以选择。

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Research on Treating Agent of Lucency Water-proof Abrasive Paper

新型透明耐水砂纸浸渍处理剂的研究

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It is fine sand.

这是细砂.

《用法词典》

This was an adaptation to the steppes of the Central Asia, which largely consisted of a hard, rocky ground, covered with coarse sand, more like fine gravel and of stiff, parched vegetation.

这是一种适应中亚的大草原，这在很大程度上是一种坚硬，岩石地面布满粗砂，更像细砾和僵硬，口干舌燥植被，包括。

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It was le vel, and covered with fine hard gravel.

地面平坦，铺着又细又硬的砂砾。

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Study on Dynamic Properties of Core Material and Dam-Foundation Fine Gravel of Earth-Rock Dam

土石坝心墙料及坝基细砂砾料动力特性试验研究

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The forming theories and CAD of the rotary cutting burs

用单角砂轮加工旋转锉的成形原理与计算机辅助设计

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An evaluation of the cutting efficiency and duration of four kinds of diamond burs

四种金刚砂钻针切割效率及耐用性的比较研究

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Hewed from cedar, zinc and Montana sandstone, the contemporary house on a butte was completed almost two years ago;

这幢大约两年前完工的现代风格宅邸坐落在一个小山丘上，建筑场地是从雪松、锌岩和蒙大拿砂岩中开辟出来的；

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Development of Coated-Abrasive Abrader for Inner Walls of Crankshaft Finishing Boot

曲轴抛光靴内壁砂带研磨机床的研制

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Repair or replace the electric brush; clean the commutator surface by abrasive paper and blow it clean.

修理或调换电刷，用木砂纸清理整流子表面，并吹净。

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The study surface of each specimen was polished to# 1000 by silicon carbide abrasive paper.

每个试样的测试面经碳化硅水砂纸逐级磨光至1000目。

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Under the conditions of different relative densities of sand and different vertical pressures, the variations of acoustic emission and tip resistance during the penetration were investigated.

针对砂土于不同相对密度与垂直应力之条件，探讨音波反应、锥尖阻抗在贯入过程之变化。

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For clean sandstone, the acoustic dispersion of compressional wave exists obviously when its porosity is more than 28%.

对纯砂岩，当孔隙度大于28%时存在明显纵波声频散。

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A Survey on the Acoustic Dispersion in Shaly Sandstone

泥质砂岩声频散性考察

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Based on the results of dispersion experiments on cores of sand and shale, the paper analyzed the variability of acoustic dispersion for dry and water-saturated cores.

结合岩心砂泥岩频散特性实验结果分析了岩心在饱水及干燥状态下声频散的特点。

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The tests show that activation effect is distinct, and that activated fly ash cement mortar strength is more 10.7% than raw ash one in 3 days, more 15.5% than raw ash one in 28 days.

结果表明：粉煤灰活化效果明显，活化粉煤灰水泥胶砂3d强度比活化前提高10.7%，28d强度提高15.5%。

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The Mix Proportion Optimizing Design of Grouting Activated Mortar with Volume Fly Ash

大掺量粉煤灰注浆活性单液砂浆配合比优化设计

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