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- In this paper we put forward a method of precision laser drilling with plane convex resonator and fo-cusing of quasi-light column. 本文提出采用平凸光学谐振腔准光柱聚焦精密激光打孔方法。
- Strictly speaking,theworm surface of the hob must be an involute helicoid which possesses an intersectingcurve in axial plane convex. 严格地说,渐开线齿轮滚刀的基本蜗杆曲面应是渐开线螺旋面,其轴断面内的截线是一条中凸的曲线。
- The thesis mainly concerns hard ball systems on a line, billiard trajectories in polyhedral angles and period billiard trajectories in a plane convex domain. 本文主要讨论直线上的硬球系统,多面角里的台球轨迹,平面凸区域中的周期轨问题。
- EQUIAREAL DIVISION OF PLANE CONVEX DOMAIN 平面凸形的六均分点
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样,双凹透镜也可以缩小。
- plane convex lens 平凸透镜
- The plane climbed until it was clear of the clouds. 飞机爬升穿出了云层。
- The flier is flying a new-type jet plane on trial. 飞行员正在驾驶一架新式喷气机作试验飞行。
- A convex lens is used to concentrate rays of light. 凸透镜用于聚集光线。
- Convex on both sides;biconvex.Used of a lens. 凸凸的两面部凸的;双凸面的。用来指透镜
- A convex lens is used to concentraterays of light. 凸透镜用于聚集光线。
- The landscape unrolled under the speeding plane. 大自然的景色展现在快速飞行的飞机之下。
- Convex on both sides; biconvex. Used of a lens. 凸凸的两面部凸的;双凸面的。用来指透镜
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- Mary would rather travel by train than by plane. 玛丽宁可乘火车而不愿乘飞机旅行。
- The plane stop over in Lyons on the way to Paris. 这架去巴黎的飞机在里昂中途停留。
- Are you going to America by boat or by plane? 你到美国是坐船还是坐飞机?
- biconvex Fresenl lens 曲面菲涅尔透镜
- Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
- The plane taxied along the tarmac. 飞机沿跑道滑行。