The effect of thermoplastic phenolic resin and sand on performance of resin coated sand was researched.
研究了热塑性酚醛树脂和原砂对覆膜砂性能的影响。

Process of Sodium Silicate Sand by Organic Ester Hardening Without Waste Sand and Machine for Used Sand
无废砂排放的有机酯水玻璃砂工艺及旧砂再生设备

The plateau tunnel accumulates the stratum construction technology through the aeolian accumulation, sand
高原隧道通过风积，沙积地层施工技术

Whether the sand is liquefied or not, the acceleration law of the pile and the sand maintains consistent.
无论砂层液化与否，桩与砂层加速度反应规律保持一致

The Research on the Performance of Artificial Sand High Performance Concrete and Natural Fine Sand Concrete
人工砂高性能混凝土和天然细砂混凝土的性能研究

and a sand collection groove is designed at the joint of the sand core and the boss of the bottom half mould.
同时在砂芯与下型凸台的结合部位设计有集砂槽。

Sand molds are characterized by the types of sand that comprise them and by the methods used to produce them.
砂模依据组成砂的不同类型和生产的不同方法来分类。

In summer the maximum value ofparticles composed with height were followed by middle sand, thick powder sand.
夏季颗粒组成最大值随着高度依次为中沙、粗粉沙。

The sand driving wind has high frequencies and durative action. So the sand controlling has sheer difficulty.
起沙风频数高，作用时间长，防沙难度极大。

Planar sand body connecting diagram that sand body connectivity between horizontal well, connecting large area.
平面砂体连通图看出砂体横向间的连通性好，连通面积大。

Construction of sand resistant forest and sand fixation project in order to reduce strength of wind drift sand.
以减小风沙流强度为目的的阻沙林和固沙工程的建造。

The coarse layers are commonly constituted by fine sand, coarse sand and gravels, which suggests a fast depositing.
粗粒层一般为细砂、粗砂和砾石层，具快速堆积的特征。

Present Situation and Application Prospect of Reclamation Techniques of Returned Sand from Sand Mold Casting in China
我国砂型铸造中旧砂再生技术现状及应用前景

Rich hydrocarbon accumulation area is usually associated with structurelithology trap, fault trap and lentoid sand trap.
有利圈闭为岩性，构造岩性，断块及断层类型。

the sand gathering net is sheathed at the bottom of the fixed lever of the sand gathering net through the upper ferrule.
采沙网通过其上的套圈套接落于采沙网固定杆底部。

Shape characteristics of the natural aeolian sand ripples and their relations with the physical characteristics of surface sand
自然风成沙纹的形态特征及其与地表沙物理性状的关系

Quantitative Analysis of Bottom Sand Flow Failed to Measure in the Test of Water and Sand at Headwork of Yellow River Diversion
引黄渠首工程水沙测验中漏测底沙的定量分析

Water moisture of damp sand of different layers in mobile sandy land was higher than Sand mound of Nitraria tangutorum brushwood.
流动沙地各层湿沙含水量均高于白刺灌丛沙堆。

The chamber of the automatic sand pumping vessel is divided into a front chamber, a middle sand chamber and a rear power chamber.
该自动抽沙船的船舱分为前舱、中部沙舱和后部动力舱。

In construction period, sand wells and sand gullies were usually used as drainage installations in the dam body of hydraulic fill dam.
水坠筑坝施工期坝体排水常采用沙井、沙沟等设施。

Elastic modulus is one of the important physical parameters of molding sand, and it is tightly connected with properties of molding sand.
弹性模量是一个与型砂性能密切相关的重要物理参数。

Research on Evaluation Model for Riverbank Protection Forest Sand Accumulation along the Main Branches of Changjiang River in Sichuan Province
川江中下游护岸林淤沙能力评优估模型的研究

Research on Evaluation Model for Riverbank Protection Forest Sand Accumulation along the Main Branches of Changjiang River in Sichuan Province.
川江中下游护岸林淤沙能力评估模型的研究

It would cause the water and sand inrush into underground workings. The test model of the mixed water and sand flow transfer and inrush was designed and manufactured.
设计并制造了水砂混合流运移及突涌模型。

Results showed that the soil texture was gravelly sandy soil in this region. The contents of gravel and find sand were reduced and thick sand wasb increased by cultivation.
耕作减少了土壤中石砾和细沙粒的含量, 增加了粗砂粒含量。