查询词典 sand-blind

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.

本文在分析总结前人对渗透理论和渗透变形以及渗漏探测方法的基础上提出了渗透变形的理论模型和渗漏探测的平面热源法，并将环境同位素和水文地球化学方法应用于堤坝基的渗漏分析评价。

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。

First, people have been built in the cliff face sand wall, but have little effect; later tried to dig anti-Shagou, soon to be filled sand.

人们先是在崖面上修筑过防沙墙，但收效甚微；后来又试着挖防沙沟，不久也被沙土填平了。

Numerical simulations by assemblies of circular panicles can qualitatively reflect the general characteristics of liquefaction behavior of sand. The interval effect of aspect ratio of elliptical panicle on the mechanical behavior of numerical sample is obtained, and the reason is related to the initial average co-ordination number. The regularity of evolution of fabric in the process of sand liquefaction under cyclic loading can be qualitatively achieved by using the numerical sample randomly mixed of panicles with different shapes. Numerical simulations can not only demonstrate the macro phenomenon of particle breakage, mostly importantly, it can also expose the evolution of particle breakage microscopically, and would contribute to further research of the micromechanics of particle breakage.

研究结果表明：Hertz-Mindlin非线性接触模型适用于变围压条件下砂土力学性质模拟；纯圆颗粒模拟能够定性地反映饱和砂土振动液化的一般规律；颗粒长短比变化对砂土力学性质的影响具有区间效应，其原因与粒间初始平均接触数有关；不同形状随机混合试样能够从定性规律上反映振动液化过程中砂土的细观组构演化规律；数值模拟不仅可得到颗粒破碎宏观响应，而且可以分析内部接触力变化和实现对粘结破裂位置的追踪，从而可进一步研究颗粒破碎细观力学机制。

Moreover, in the system of the molding and core sand, the reclaimed sand was 90 percent.

另外控制再生砂在型、芯砂系统中的比例为90wt%。

Does the supplier have an established Sand Control procedure to control molding and core sand mixes?

工厂是否制定了型砂的控制程序来控制造型和制芯的混砂过程？

Does the supplier hae an established Sand Control procedure to control molding and core sand mixes?

工厂是否制定了型砂的控制程序来控制造型和制芯的混砂过程？

2 Core and changing the no-bake sand core to oil sand core .

通过重新设计2#芯子的工艺，将原来的自硬砂芯改为油砂芯，节约了芯子成本。

The temperature fields of sand core for castings with thickness in 60, 30, 18 and 8 mm were simulated. The results show that the modified water glass sand has good knockout capability, and pouring experiment results also verify the simulated results.

用上述计算程序模拟计算了壁厚分别为60、30、18、8mm的铸件砂芯温度场分布，模拟结果表明改性水玻璃砂有好的出砂性，浇注实验证实了计算机模拟分析结果。

ABSTRACT In our country, more than 70% steel castings and large iron castings are produced by water glass mould and core sand process. The annual consumption of water glass and its sand is more than 300, 000 and 6, 000, 000 tons respectively.

我国70％以上铸钢和大型铸铁件是应用水玻璃砂工艺生产的，年消耗水玻璃30余万吨，水玻璃砂600余万吨。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。