Application of tomography to the studies of crustal structure in North China

The Application of gravity methods in the Investigation of crustal structure

重力方法在地壳结构研究中的应用

The harmonious series and gravitational data used to inverse crustal structure

调和级数法与重力资料反演地壳构造

Special Features of Crustal structure of Southern part of Liaoning Province

辽宁南部地壳构造特征

Crustacean plankton ( Cyclops) breeding in reservoir has brought new problem to water treatment process, and brought threat to safety of drinking water.

浮游甲壳动物（剑水蚤）在水库水中的孳生给水处理工艺带来了新的问题，同时也给饮用水的安全带来了威胁。

Control of Crustacean Plankton in Water Treatment Process

水处理工艺中浮游甲壳动物的控制

Application of wet crushing in reutilization of discarded printed circuit boards

湿法破碎在废弃线路板资源化中的应用

Sandstone in acidic diagenetic enviroment has such characteristic as fast compaction rate, earlier compaction stage, prevalent grain solution and crushing, poor heat resistance and crushing resistance, small free growing space of authigenic mineral, poor reservoir properties and so on.

偏酸性成岩环境砂岩具有快速压实阶段较早、颗粒溶蚀一压碎现象普遍而抗热性和抗压性差、自生矿物的自由生长空间较小以及储集性质较差等特点。

The influence of α-Al2O3 micropowder additions on permanent linear change, apparent porosity, cold crushing strength and slag resistance of MgO-Al2O3 based castable is studied in this paper. By EDAX analysis, the mechanism of slag corrosion is investigated.

研究α-Al2O3微粉加入量对钢包渣线用镁铝质浇注料线变化率、显气孔率、耐压强度和抗渣性能的影响，借助EDAX分析，探讨了浇注料的渣蚀机理。

The Water absorption ( Wa), Porosity ( Pa), Bulk density ( D) and crushing strength, acid resistance, alkali resistance have been tested.

测试了样品的吸水率、气孔率、体积密度以及压碎强度和耐酸耐碱性。

The existing anchorage system for prestressed tendons and cables of steel is no longer appropriate for that of FRP due to their low transverse shear strength and crushing resistance.

但其横向抗剪及抗挤压强度较低，现有的预应力筋和拉索锚具体系不再适用于FRP预应力筋和拉索。

Effect of Super Fine Crushing on the Extraction Yield of Polysaccharide in Lentinus edodes Stem

超微粉碎处理对香菇柄中多糖溶出率的影响

Advance of the Super Fine Crushing Technology

超细粉碎技术的进展

Vertical shaft impact crusher is used in fine crushing of medium and hard materials.

立式冲击破碎机用于中硬物料的细碎加工。

Effect of Super Fine Crushing Technique on the Extraction in Gynostemma

超微粉碎对绞股蓝总皂苷提取工艺的影响

It is shown in the static and dynamic compression stress-strain results, the curve has a typical three stages form. There are elastic stage, plastic stage, and close-grained stage after crushing.

从其静-动态压缩应力-应变曲线中可以看出，曲线是典型的三阶段形式，即弹性阶段，塑性阶段，及压溃后的密实阶段。

For high rockfill dams, the grain crushing in high stress field may raise the deformation rate of dam body and should be considered in numerical calculation.

对于高堆石坝而言，在高应力场作用下堆石颗粒将明显破碎，从而导致坝体变形率增加，因此，在高坝数值计算中必须考虑颗粒破碎的影响。

The results indicate that: both strain and extrusion ratios are in direct proportion to crushing stress, while temperature is in inverse proportion to crushing stress. The more D-value of stress area s_1 and s_3 is, the more crushing stress.

结果表明，应变和挤压比与破碎应力成正比，温度与破碎应力成反比，受力面积s1与S3相差越大，破碎应力就越大。

CONCLUSION: With the alveolar bone resorption, the post materials make great impacts on the peak value of maximum crushing stress in the residual teeth root, especially the mechanic capability of post materials.

结论：伴牙槽骨吸收时，牙桩的材料成为影响剩余牙根内部最大主应力峰值的决定性因素，桩材料的力学性能对剩余牙体的影响更为显著。

Cell-size has a significant effect not only on the crushing stress and plastic modulus of aluminum foam, but also on the strain-rate sensitivity of material of this kind.

泡孔尺寸不仅影响着材料的屈服强度和塑性模量等，还影响着材料的应变率敏感性。

The paper set up mechanics model of roll cylinder mill, inquired into crushing stress of materials by mill and materials clamp angle and energy requirement problems.

本文建立了辊筒磨的力学模型，探讨了辊筒磨对物料的粉碎力、以及物料钳角、单位质量能耗等问题，并通过实验进行了验。