1.This paper proves the converse propositions of the higher order Cauchy Mean Value Theorem and higher order Lagrange Mean Value Theorem under concave and convex function and strictly concave and convex function.
在函数凹凸和严格凹凸的条件下 ,文章引出并证明了高阶Cauchy中值定理和高阶Lagrange中值定理的 4个逆命题。
2.Based on the hydrodynamic energy transport model,the influence of variation of negative junction depth caused by concave depth on the characteristics of deep-sub-micron PMOSFET has been studied.The results are explained by the interior physical mechanism and compared with that caused by the source/drain depth.Research results indicate that with the increase of negative junction depth(due to the increase of groove depth),the threshold voltage increases,the sub-threshold characteristics and the drain current driving capability degrade,and the hot carrier immunity becomes better in deep-sub-micron PMOSFET.The short-channel-effect suppression and hot-carrier-effect immunity are better,while the degradation of drain current driving ability is smaller than those with the increase of depth of negative junction caused by source/drain junction shallow.So the variation of concave depth is of great advantage to improve the characteristics of grooved-gate MOSFET.
基于能量输运模型对由凹槽深度改变引起的负结深的变化对深亚微米槽栅PMOSFET性能的影响进行了分析，对所得结果从器件内部物理机制上进行了讨论，最后与由漏源结深变化导致的负结深的改变对器件特性的影响进行了对比.研究结果表明随着负结深(凹槽深度)的增大，槽栅器件的阈值电压升高，亚阈斜率退化，漏极驱动能力减弱，器件短沟道效应的抑制更为有效，抗热载流子性能的提高较大，且器件的漏极驱动能力的退化要比改变结深小.因此，改变槽深加大负结深更有利于器件性能的提高.
3.Sound fields generated by transducers with concave spherical acoustic lens and by transducers with concave spherical piezo-electric ceramic are studied through numerical calculations and experiments in this paper. The results indicate: focusing effect can be obtained in either case, but the latter transducer is more adaptable for high intensity focused ultrasound(HIFU) therapy.
本文通过数值计算及实际测量，研究了凹球面声透镜聚焦换能器及凹球面自聚焦换能器产生的声场，证实此两种聚焦方式均可获得理想的聚焦效果，但自聚焦方式更适合高强度聚焦超声（HIFU）加热治疗。
4.His figure looks very funny in the concave mirror
他的样子在凹镜里显得非常可笑。
5.aberration of the concave mirror is reduced by a meniscus lens.
用半月板镜头减少凹透镜的过失。
6.Because concave and convex chamfer is occlusive Songkuang is wide, the floor uses occurrence crack of the come unglued after period of time, after aperture eats water, humidity, dust, the floor is out of shape case become warped, meeting effect use effect and use fixed number of year.
因凹凸槽咬合松旷宽大，地板使用一段时间后脱胶出现缝隙，缝隙进水、潮气、尘土后，地板变形起翘，会影响使用效果和使用年限。
7.Furthermore, by means of regression analysis, the mathematical models of threshing and separating system-- axial-flow-short-rasp-bar drum with grid concave, including threshing and separating rate and power consumption, are established with software named DPS used for data processing.
进而运用回归分析数学方法和DPS(Data Processing System)统计分析软件的回归子系统建立短纹杆—栅格凹板脱粒分离系统的脱分率数学模型及滚筒功耗数学模型。
8.Inspection of peripheral cracks for concave pit on inner drum-surface of the title boiler in Jinan Northern Suburban Cogeneration Power Plant has been conducted.
对济南北郊热电厂 1台锅炉汽包内壁凹坑边沿的裂纹状况进行了检查。
9.This paper presents the results of experimental study of the Q-modula-tion feature of a Nd￣(3-)-doped single mode fiber laser. The system is composed of a CW Ar￣- laser at wavelength of 5145 as a pumping source,a plane-concave optical cavi-ty,a optical chopper as Q-switch inside cavity and a PIN detecto. With the system.
采用连续运转Ar￣＋激光器5145输出波长光作为泵浦源，采取端泵浦的平凹光学谐振腔结构，用光学斩波器作为Q开关，建立了掺钕单模光纤激光器的调Q实验装置，对这种激光器的调Q特性进行了实验研究和讨论。
10.Due to large tramsmission coefficient crystal led high abscissa temperature gradieut,the crystal only with large convex degree(natural convection)or with large concave degree(forced convection)was grown,so that obvious interface inversion is able to appear and it is located in the top of the crystal when rotation rate is suitable.
相应于这个透过百分数的透过系数大的晶体，由于?T／?x大，仅能以大的凸度（自然对流）或大的凹度（强迫对流）生长，在转速适当时，易于在晶体首部出现明显的界面翻转。
