查询词典 concave curve

Analyzes the performane of plane concave resonators with internal thermal lenses and gives out stability and unstability regions in terms of dioptric. Based on the stable and unstable resonators′ characteristics,a detailed analysis for output power of cw plane concave Nd:YAG laser is presented.

光泵Nd：YAG激光器的热效应会在YAG棒中引起轴向热伸长和径向折射率梯度，从而产生激光介质的热透镜效应，有关内含热透镜的谐振腔的研究已有许多报道［1～2］，但基本上都是研究谐振腔的热稳性，对输出功率特性的研究报道很少。

Ervertebralis of scoliosis goat apical vertebral,there is no significant difference in distribution of any two sections' sympathetic fiber in normal peoples annulus fibrosus disci intervertebralis,and there is significant difference between the sympathetic fiber distribution of convex side and concave side in annulus fibrosus disci intervertebralis of AIS apical vertebral-the sympathetic nerve supply of convex side to gain advantage concave side.

结果成功构建山羊脊柱侧凸模型，研究发现正常山羊椎间盘纤维环四个区的交感神经分布无显著差异；侧凸山羊顶椎区椎间盘凸凹侧纤维环交感神经分布无显著差异；正常人椎间盘纤维环四个区的交感神经分布无显著差异；青少年特发性脊柱侧凸患者顶椎区椎间盘凸凹侧纤维环交感神经分布有显著差异，凸侧明显多于凹侧。

The aromatic holding structure for dust collecting chamber inside vacuum dust collector includes concave holding notch in the bottom of the dust collecting chamber for holding antiseptic agent and aromatic, and top cover over the concave holding notch and with several ventilating holes for dispersing antiseptic agent and aromatic toward the dust collecting chamber.

本发明是关于一种真空吸尘器的芳香剂安装结构，特别是在收集本体中空气所包含的污物的集尘室内部安装芳香剂的结构。本发明的真空吸尘器(30)的芳香剂(40)安装结构，包括设置在尘袋(20)所在的集尘室(31)底部可放进抗菌剂及芳香剂的凹形安装槽(35)、安装在该凹形安装槽上部的可开闭的顶盖(37)，以及形成在凹形安装槽(35)和顶盖上可开闭安装槽上部的开闭构件。

In Chapter 3, existence of quasi-convex, quasi-concave, convex and concave solutions of a linear iterative functional equation are studied.

曾经有人讨论了凸迭代根和凹迭代根的存在性，但对更一般的方程——线性型迭代方程的解的凹凸性尚无结果。

Before version of the process flow is: that the original steel plate, that is, the original mould, Yin, maintop pattern concave, hardened-overvoltage round steel shaft, that is, cavity, positive and maintop pattern convexes-round steel shaft had hardened-Nano-imprint lithography version submodules, Yin, maintop pattern concave-skinpass printing layouts — chromeplate — students'computer proofing-business card printing and membership card.

功版的工艺功程是：邮票原钢版，即原模，晴图、版纹凹形，不退火强硬——功不抬圆钢轴，即母模，阳图、版纹凸形——圆钢轴不退火强硬——功不抬印版，即子模，晴图、版纹凹形——裂缝版面——印版镀铬——上机打样——制卡和会员卡制作。

The process flow is: that the original steel plate, that is, the original mould, Yin, maintop pattern concave, pressed plastic version —— welding by stamp layout: skinpass page make up layouts guniting silver, copperizing-nickel-coated, cavity (for positive and maintop pattern convexes)—— a printing plate nickel plating shall be guilty of submodules, concave maintop pattern--a printing plate chromeplating treasure…every two pieces by mechanical bent of the semisircle package 5.1 core-students'computer proofing-business card printing and membership card.

其工艺功程是：邮票原钢版，即原模，晴图、版纹凹形，冲不抬塑料版——按邮票版式割切拆版——裂缝版面——喷银、镀铜——镀镍(为母模，阳图、版纹凸形)——镀镍为印版，即子模，版纹凹形——印版镀铬——把两块印版用板滞弯不败半圆形包在滚筒芯上——上机打样——制卡和会员卡制作。

Lens, plano-convex lens, double-convex lens, plano-concave lens, double-concave lens, plus/minus Meniscus Lens.

球面镜：平凸透镜、双凸透镜、平凹透镜、双凹透镜、正/负弯月透镜、超半球透镜、金属球面镜、积分器及其他球面胶合镜等。

The latest experimental results of the focusing perfermance of the compound high-energy X-ray lens is designed with PMMA with the parameters of 40 plano-concave elementary lenses positioned in line with axial symmetry, 200 μm radius of the concave surface, 0.15 nm working wavelength, 0.5 mm geometrical aperture and 8 mm length of the compound lens and 1.3 m focus length, are briefly introduced.

报道了这种新型X射线光学元件聚焦性能的最新实验结果。设计的高能X射线组合透镜为聚甲基丙烯酸甲酯材料，包括40个相同的、顺序排布的平凹折射单元，折射单元的球面半径为200 μm，组合透镜的几何口径约为500 μm，长度约为8 mm，焦距约为1.3 m。简要描述了PMMA材料X射线组合透镜的制作技术和制作过程。并给出了X射线组合透镜聚焦性能测试实验系统和实验条件。

This article introduced the first human understanding of the nature of the process and the status of knowledge of the universe, from the philosophical point of convex - concave symmetry of the difficulties faced by humanity, then use the concept of convex - concave symmetry to solve some knotty problems, from a philosophical point of the final for science to lay a good foundation.

本文先介绍了人类对自然界的认识过程和对宇宙现状的认识程度，再从凹凸对称的哲学角度探讨人类所面临的困难，然后用凹凸对称的观念来解决某些疑难问题，最后从哲学的角度为科学打下一个良好的基础。

After some experimental results obtained in machining samples with complex ruled surface, concave spherical surface, convex surface and samples with both concave and convex surface are analyzed, the value of these samples in practical prodúction is discussed.

通过对一些典型的复杂直纹曲面样件以及凹球面、凸球面和凸凹复合球面样件加工实验分析，探讨了这些样件在实际生产中的应用价值。

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