查询词典 concave line

The velocity,acceleration and time of a particle sliding down along a horizontally free concave surface are discussed.

对于一个质点从可自由移动的光滑的凹曲面上滑下的速度、加速度和时间作了一般性讨论，建立了相应的公式。

Flowers inserted on discoid or concave, fleshy receptacle; achene with crested or U-shaped appendix at apex.

花着生于盘状的或凹，肉质的花托；瘦果具脊或U形附属物在先端 7 Lecanthus 假楼梯草属

On the basis of B-Rep of CAD data and ACIS library,a technology of surface filling based on loop feature handling and outlines smoothing is presented in the paper,filling for the surface with complex concave edges is also studied in the paper.

以CAD数据的边界表示法和ACIS几何开发库为基础，提出了基于环特征处理和外边界光顺的曲面填充技术，对含有复杂凹缘的汽车覆盖件曲面填充进行了研究。

Anastigmatic mounts of concave gratings based on this algorithm are optimized,and numerical results are simulated.

基于此方法讨论了无象差点结构凹面光栅的优化设计，并给出了数值模拟结果。

Clinical manifestations, sinus large多斤called antihelix feet above the ostium diameter is only about 1mm concave hole can emit a little white micro-foul secretions.

临床表现，窦道大多斤吁耳轮脚前上方，窦口为直径仅1mm左右的凹孔，可排出少许白色微臭分泌物。

Based on the previous research on the portal crane administration, one standpoint put forward in this paper is idea that is on the foundation of reliability in this paper, two viewpoints take shape when reason is analyzed, that is fatigue break and appearing the flaw that will extend. What is the fatigue break?(this phenomenon is always happen in some place),the fatigue is that board appears apophysis and concave when the board is pressed .so that the board ability of bearing the weight of load will descend. Second , the board appear the flaw that the flaw extends in the some place of board one reason is that the machine works too long, so the board ability of bearing the weight of load will decline.

本论文建立在已有的港口装卸机械管理的研究基础之上，进一步提出了以可靠性为基础的港口装卸机械的管理思想，已有的研究表明，港口机械设备破坏主要由于两个原因，第一是稳定性问题，特别是构件的局部稳定性，所谓稳定性是指：在板的平面内，板受到平行于板面的压力作用，使板发生隆起、内陷等凹凸不平的结果，从而使板受载能力减弱；第二是结构出现疲劳裂纹及其扩展，这是由于设备长时期运行，而造成设备某些部位出现裂纹并得以扩展，使设备承载能力下降。

Secondly, some foundational arithmetic such as the division of concave polygon, the polygons boolean operation, the transform from circle to polygon, the pick-up of model top surface were designed particularly based on OpenGL.

然后，基于图形库OpenGL完成了包括凹多边形的分割、多边形的布尔运算、圆的多边形转化、模型上表面获取等基础算法；并针对已建模工艺设计了相应的仿真算法。

The results show that the degassing efficiency increases with the residence time increasing;when other parameters are certain, the degassing efficiency increases with the number of arris and the concave depth increasing;the degassing efficiency decreases with the angle increasing.

结果表明：脱气效率随着滞留时间的增大而增大；当其他参数一定时，脱气效率随着棱数和凹入深度的增大而增大，随着角度的增大而减小。

The panel and back are flat, Guoqin body and inside the waist no concave angle.

其面板与背板都是平的，琴身腰部无角而往里凹。

The plasticity in a bas-relief is such that the features of a face in it can be prominent in both a convex and concave manner; what matters is that the extreme features are emphasized.

在一个可塑性的浅浮雕中也是如此，在那上面起着重要作用的脸部可以是凸的和凹的两个风格；所有起着极度重大作用的实质是强调音。

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