查询词典 concave angle

According to dispersion relations, The relations of the incident angle, reflection angle and refraction angle equations with bicrystal parameters and wave vector are obtained respectively. The variation of the reflection angle and refraction angle with the incident angle for certain bicrystal parameters is presented by angle quations.

根据晶体的色散关系解出了入射角、反射角和折射角关于晶体参量及波矢的方程，并根据角度方程给出了在一定参量下反射角和折射角关于入射角变化的关系图，以图示的方法显示了光束在界面处的异常性质。

Critical angle of refraction - semi-circular cylindrical mobile light source, the incident angle change the size of refraction angle to change at this time, when the refraction angle = 90 degrees, which is critical at this time angle of incidence angle, the critical angle of water at 40 degrees large about anything mobile source of water in the water screen that is a reflection of light, a phenomenon that total reflection.

光折射的临界角定义：光折射角=90度时，入射角即为临界角，按二方法，将半导体激光光源去掉铁夹，吸附在右下角的铁板上入射光对准中心，即产生折射光线，沿半圆形柱面移动光源，改变入射角的大小，这时折射角也改变，当折射角=90度时，这时入射角即为临界角，水的临界角大的在40度左右，再做移动光源在水中的水屏即出现反射光线，这种现象称全反射。

Inequality proof of various ways, they were: use derivative testify inequality nature, Includes using functional monotonicity and extreme value, the function and the concave and convex inequality, proving is concave and convex function in the original definition of equivalent definitions and a lemma is proposed on the basis of relevant concave and convex function of several theorems about inequality, and briefly discusses how to use the definitions and theorems in proof of inequality.

不等式的证明方法多种多样，它们分别是：用导数性质证明不等式；包括利用函数单调性，极值与最值，函数凹凸性证明不等式，其中在给出凹凸函数原始定义等价的解析定义和一个引理的基础上提出有关凹凸函数关于不等式的几个定理，并简要阐述了利用定义和定理在证明不等式中的运用。

With the concave transaction cost function more conforming to the actual situation, we introduce condition risk value to measure profolio risk, and propose mean- CVaR concave integer programming model under concave transaction costs and minimal transaction unit constraints.

1取交易费用函数为更实际的凹函数，引入条件风险价值度量组合风险，提出了考虑交易费用及最小交易量的均值—CVaR凹整数规划模型。

Properties of efficient portfolios and the efficient frontier to the model are systematically analyzed. Our main results concerning the properties are: every efficient portfolio can be solved by minimizing portfolio risk under a given level of portfolio return or by maximizing portfolio return under a given level of portfolio risk; on the efficient frontier, the risk is a convex and strictly increasing function of the return and the return is a concave and strictly increasing function of the risk; the utility function on the efficient frontier can be expressed as a quasi-concave function of the risk or the return if the investor's utility function is quasi-concave.

从理论上系统地对该模型下的有效投资组合和有效前沿的性质进行了分析，结果表明：每一个有效投资组合可通过在给定期望收益水平的条件下最小化投资组合风险来获得，或者在给定风险水平的条件下最大化期望投资组合收益来获得；在有效前沿上，风险是收益的严格单调递增凸函数，收益是风险的严格单调递增凹函数；当投资者的效用函数是拟凹函数时，则有效前沿上的效用可表达成风险或收益的拟凹函数。

3When mark price increase, the advertising cost, the optimal order and the lower bound of total profits increase in three cases. In the S shaped function, the advertising cost in three case decreases concave downwards, and in concave shaped function, the advertising cost increases concave upwards.

3当成本加成率m递增时，在三个个案中，广告支出、订购量以及利润下限都向上递增，在S型函数中，三个个案下的广告支出效果为凹面向下，而凹型函数中，广告支出效果则为凹面向上。

Stainless steel concave end knurling;DIN915 Stainless steel cylindrical end; DIN914 Stainless steel pointed end; DIN916 Stainless steel concave end; DIN913 Stainless steel flat end; DIN551 Stainless steel slotted point; DIN906 Stainless steel oil plug,semi-circular; Stainless steel two-end hexagonal non-standard; Brass internal hexagonal,cross,non-standard; Brass wobbler,nickel-plated; Stainless steel ,alloy steel heat-resistant; Alloy steel zinc-plated; Alloy steel semi-circular; DIN915 Alloy steel cylindrical end, Philips screw non-standard; DIN916 Alloy steel concave end;DIN914 Alloy steel pointed end;DIN906 Alloy steel oil plug; Corrugated ball; Two-end internal hexagonal non-standard; Textile machine screw-nail; Tool-post screw-nail

不锈钢凹端滚花；DIN915 不锈钢柱端；DIN914 不锈钢尖端；DIN916 不锈钢凹端；DIN913 不锈钢平端；DIN551 不锈钢一字槽；DIN906 不锈钢油塞、半圆；不锈钢2头内六角非标；黄铜内六角、十字槽、非标；黄铜梅花头、镀镍；不锈钢、合金钢耐落；合金钢镀锌；合金刚半圆；DIN915 合金钢柱端、十字槽、非标；DIN916 合金钢凹端；DIN914 合金钢尖端；DIN906 合金钢油塞；波珠；2头内六角非标；纺织机螺钉；刀架螺钉。

Have known concave-convex soil of landed estate and the new model compound adsorption driers taking the person as raw material such as Anhui Ming Guang , Jiangsu Xuyi, local concave-convex structure and water absorption function, think that concave-convex soil has but is H2 , N completely compared with zeolite molecular sieve, 2, O 2, air waits for the inactive gas adsorption drier.

了解了安徽明光、江苏盱眙等地产凹凸土及以其为原料的新型复合吸附干燥剂，凹凸土的结构和吸水性能，认为与沸石分子筛相比，凹凸土完全有可作为H2、N 2、O 2、空气等惰性气体的吸附干燥剂。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

摘要本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48