The paper introduces the design course of the modular machine tool for multi-hole concentration gearbox.
介绍了多孔密集型箱体组合机床的设计过程，实际证明该机床设计严谨规范，又有技术创新，使用效果良好。
Hall coefficient depends on electronic concentration and the relative values of empty hole concentrations and their migration rate in the semiconductor.
而霍耳系数取决于半导体材料中电子浓度和空穴浓度的相对大小及其迁移率之比。
Most astronomers believe that the large concentration of mass at the galaxy's center is a black hole whose gravity is causing the gas to whirl.
大多数天文学家认为，星系中心的大量物质是一个黑洞，它的引力导致气体旋转。
The hole isn't literal; no part of the stratosphere is empty of ozone. But scientists use the hole metaphor to describe the area where ozone drops below a historical concentration of 220 Dobson Units.
这里所谓的“空洞”不是字面上含义，并不存在任何一处平流层完全没有臭氧，科学家们用空洞这一说法来描述这些臭氧浓度低于历史读数220多布森单位的区域。
The right image shows the concentration of chlorine monoxide, which is concentrated over the Arctic where the ozone hole developed.
右图则显示了氯化物的浓度分布，而其也恰好在出现臭氧洞的地方呈现出高值分布。
A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior.
一个黑洞是物质浓缩到足够大的以致引力除了通过量子隧道行为之外阻止任何东西从它那里逃逸。
Most astrophysicists accept that this is the case, since according to general relativity, any concentration of matter of sufficient density must necessarily collapse into a black hole.
大多数天体物理学家接受这个情形，自从依照广义相对论，充份密度物质任何集中一定必然坍缩为一个黑洞。
Thus the lack of such flare-ups around a compact concentration of mass is taken as evidence that the object is a black hole, with no surface onto which matter can be suddenly dumped.
因此密集度很高物体周围这类闪光的缺乏被获得物体是一个黑洞的证据，由于没有表面物质进入可能是突然倾卸之上。
The effects of such machining parameters as voltage, type and concentration of electrochemical fluid, materials etc on the cooling hole formation were also analyzed.
实验同时分析了加工参数如加工电压、电解液种类和浓度、加工材料等对冷却孔成形的影响。
Conclusion: the main reason of refracture through the last screw hole in plate fixation is over-stress concentration.
结论钢板边缘末位螺丝钉孔处再骨折的发生，主要与钢板两端应力集中有关。
The stress concentration factor (SCF) decreased with the increase of the width of plates when the hole diameter was definite.
结果表明：在开孔尺寸一定的情况下，随着板宽的增大，开孔损伤板的应力集中因数减小；
According to the changing of the calcium ion concentration in the concrete hole solution, the influence of the chemical damage on the concrete constitutive relations is studied.
根据混凝土孔隙溶液中钙离子浓度的变化情况，研究了化学损伤对混凝土本构关系的影响。
Using an approximate analytical method, the explicit expression of stress concentration factors is derived for an eccentric circular hole in a tension orthotropic finite-width strip.
用近似解析方法推导出拉伸正交各向异性有限宽板偏心圆孔的应力集中系数的显式表达式，除了比较极端的情况外，该式的精度较好。
This change is attributed to the hole carrier concentration decreasing with lattice oxygen releasing supported by iodic titration result.
分析认为该电导出现极值的现象是因为高温晶格氧析出导致样品空穴载流子浓度降低所致。
This article studies the stress concentration question nearby the hole of the finite width thin board by means of ANSYS numerical value simulation.
应用ANSYS数值模拟的方法研究了含圆孔有限宽度薄板孔边应力集中问题。
The main research contents in this dissertation are as follows: Elastic wave scattering and dynamic stress concentration in circular cylindrical shells with a hole are studied.
本论文具体研究工作如下：研究了含孔柱壳结构中弹性波散射与动应力集中问题。
A photoelastic study for the viscoelastic stress-concentration factors in bars with a round hole under axial tension load, using self-made viscoelastic materials is presented in this paper.
本文利用自制的光粘弹性材料，用光弹性法研究了在轴向拉伸荷载作用下带有圆孔的杆件中的粘弹性应力集中系数。
The 3-D curve of stress concentration factor with the various location of opening hole was obtained. In addition, both the effect of various location of hole along the coordinate axis and …
此外，孔沿座标轴及沿原孔边缘位置变化对应力集中系数的影响被详细研究，从而为合理设计炉壳开孔提供了理论依据。
The result indicates that the discharge per unit width, the sediment concentration, the grain size of sand influences the depth of scour hole.
试验结果表明：浑水水流的单宽流量大小、含沙量的多少以及含沙粒径的变化都对冲刷坑深度有一定的影响。
The influences of different loads on hole-edge stress concentration factors were discussed.
对不同的荷载作用情况下，以及他们对孔边应力集中系数的影响进行探讨。
Using a special pin hole in design will be an effective method to change stress concentration on inside of piston, improve safety coefficient of skirt...
采用异形销孔设计将是改变活塞内侧应力集中，提高裙部结构的安全系数，减少活塞裙部裂损的有效方法。
The via hole is stopped at a position shallower than a position at which the oxygen concentration of the upper electrode becomes maximum.
通孔停止的位置比上电极中氧浓度最大的位置浅。
The photoelastic coating method is used to study the phenomenon of stress concentration around the hole in the 3D braiding composite materials. Some results are obtained.
采用反射光弹技术考察了编织复合材料的孔边应力集中现象，得到了有益的结果。
The influence on hole-edge stress concentration factors of different loads is explored. And simulation analysis is made on the influence of Young's modules in the two...
不同荷载作用对孔边应力集中系数的影响进行探讨，并就两个主方向的杨氏模量的变化对孔边应力的影响进行仿真分析。
The influence on hole-edge stress concentration factors of different loads is explored. And simulation analysis is made on the influence of Young's modules in the two...
不同荷载作用对孔边应力集中系数的影响进行探讨，并就两个主方向的杨氏模量的变化对孔边应力的影响进行仿真分析。
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