sand test

The special feature of the new testing method is that a cake-like sand test piece with V-shape groove on its surface is heated from bottom to top in a new-designed high temperature shock heating furnace.

新试验方法的特点是采用表面有V形沟槽的圆饼形型砂试件，在激热试验炉中受到自下而上的高温烘烤。

Test Study on Relation Between Thaw Collapse Displacement of Medium Sand and Negative Friction of Single Pile

中砂融沉位移与单桩负摩阻力关系的试验研究

Based on physicochemical test of resin film and analysis of resin sand properties, the CO2 gas-hardened mechanism of PANa resin sand was discussed.

通过对树脂膜的理化分析和对树脂砂性能试验，探讨了聚丙烯酸钠树脂砂CO2硬化机理。

The triaxial shearing test showed that the cohesion of sand reinforced with the fibre of sand thorn or sand willow was increased by 2.5~ 4 times; the cohesion and the angle of internal friction were increased by 0.25~ 0.40 times for the reinforced clay soil.

三轴剪切试验结果表明，沙棘、沙柳须根的加筋作用使沙土的粘聚力c值提高了2.5~4.0倍，使粘性土的粘聚力c值及内摩擦角φ值均增加0.25~0.40倍。

The weight loss of core sand after immersion in test solution is of < 7% and> 60%;

储层水敏岩心在HDS01和SSN13溶液中的失重率分别为60%；

Formation damages resulted from large test pressure difference include particles migration, formation sand production, retrograde condensation and early water production, and so on.

测试生产压差过大产生的危害包括微粒运移、地层出砂、反凝析、早期出水等。

The test target of "depositing coarse sand and discharging the fine" is basically achieved.

放淤试验工程淤粗排细的目标基本得以实现。

Wind Tunnel Test on Sand preventing Mechanism of Double-filmed Sand bag Obstacle and Upright Checkerboard Sand-barrier

复膜沙袋阻沙体与芦苇高立式方格沙障防沙机理风洞模拟实验

Centrifuge Modeling Test to Working Mechanism of Reinforced Aeolian Sand Retaining Wall

加筋风积沙挡墙工作机理的离心模型试验

The sand test and model land test were the proof of the stimulation of litter on the growth of ash. On Sand Test.

室内砂培试验证明、落叶松的枯枝落叶能促进水曲柳的生长，模拟样地试验验证了室内砂培试验的结果。

It could improve survival rate of seedlings to chose coarse sand or coarse sand and perlite ( 1 ∶ 1) as media and transplant test tube seedlings in spring and autumn, and the rate was about 90%.

在试管苗移栽阶段，基质选用粗河沙或粗河沙+珍珠岩（1∶1），于春天和冬天移栽，可提高试管苗移栽的成活率，使移栽成活率达到90%左右。