砂的

In this paper, the history and the current situation of studies on piles in calcareous sands are systematically summarized, and the reason for low bearing capacity of piles in calcareous soil s is analysed.

系统综述了钙质砂中桩基工程研究的历史和现状，分析了钙质砂的低桩基承载力的原因，提出今后重点研究方向。

The addition of admixture can increase the adhesion of rubber and cement paste, so the strength is improved.

使用二次成型和加压成型可以提高水泥胶砂的强度；掺加NaOH和NaCl可以通过改善水泥浆体与橡胶的粘结，使得橡胶水泥胶砂和混凝土的抗压、抗折强度提高。

Theaddition of admixture can increase the adhesion of rubber and cement paste, so the strength is improved.

使用二次成型和加压成型可以提高水泥胶砂的强度；掺加NaOH和NaCl可以通过改善水泥浆体与橡胶的粘结，使得橡胶水泥胶砂和混凝土的抗压、抗折强度提高。

Hence, it is proposed to allow an appropriate amount of sand production during recovery of unconsolidated sandstone gas reservoir s.

疏松砂岩气藏在开采过程中容易出砂，采取完全防砂的方式进行开采，既增加了气井的成本，又降低了气藏的开发速度。

The better part of valor is discretion.

有砂砾的，满砂的，像砂的

The study also indicated that the intensity of the riffling paper was better than the paper without riffling. During retrogradation,the fibrous loss of squeezing paper was small and the viscosity droped slowly.

研究表明，纸页经过除砂后的物理强度要好于未经除砂的纸页强度，老化对压榨纸页纤维的损伤较小，粘度下降也较缓慢。

While the gravel layer is thick, the occurrence and development of the boiling of sand correspond to the model of hemispheric bottom hole which cheek by jaw with upper clay band; While the gravel layer is relatively thin, the occurrence and development of the boiling of sand correspond to completely penetrating well model.

当砂砾石层较厚时，涌砂的发生、发展符合紧靠上覆粘性土层的半球形井底模型；当砂砾石层相对较薄时，涌砂的发生、发展过程符合完整井模型。

The LHR values of walnut shell, magnetite particles and ceramic sand were 76.41, 1.057 and 0.8769 respectively, which showed that walnut shell was lipophilic obviously while magnetite and ceramic sand seemed to be hydrophilic.

实验测得核桃壳、磁铁矿和陶粒砂的亲油亲水比依次为76.41、1.057和0.8769，说明核桃壳滤料的亲油性很好，而磁铁矿和陶粒砂滤料表现了更好的亲水性。

Based on the experience with more than 10 years running shell mould casting line and with the application of various resin coated sand s,some technical problems of resin coated sand s for shell mould castings were discussed.

根据壳型生产线十几年运行和各类覆膜砂应用的经验，对壳型铸造用覆膜砂的一些技术问题进行探讨。

This paper discusses the influence of water content of sand upon concrete quality and reaches a conclusion that concrete mix proportion adjustment is subject to water content of sand after analysis with gravimetric and volumetric methods.

本文详细论述了砂的含水量对混凝土质量的影响，并分别按重量法、积法设计作了分析，得出混凝土配合比应根据砂的含水量及时作出调整。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。