查询词典 concave polygon

The high power diode end-pumped Q-switched Nd:YVO_4/KTP red laser was demonstrated by using a simple plano-concave cavity. At the repetition rate of 15kHz, the maximun average output power of 1.37W was attained, with the corresponding pulse width of 33ns.

采用简单的平凹腔结构以及KTP倍频晶体实现了全固态高功率Nd：YVO_4/KTP腔内倍频671nm红光输出，其最大平均输出功率为1.37W，相应的重复频率和脉冲宽度分别为15kHz和33ns。

The model for calculating the stability of the resonator containing a laser rod with curvature ends was developed,which was based on the transfer matrix theory of Gauss beam. The results from the numerical simulations on some typical resonators indicate that the laser rod with curvature ends can expand the stable region of plano-plano,plano-concave and plano-convex cavity notability;despite the laser rod with curvature ends can improve the stability of above mentioned cavities,it costs the effective mode volume.

计算结果表明，对于几类典型的谐振腔如平平腔、平凹腔，球面端面激光棒可以显著的扩展强热聚焦作用下的稳定工作范围；球面端面激光棒在提高约束稳定性和热稳定性的同时，通常是以牺牲有效模式体积为代价的。

The plastron is also only just concave on the male shown.

只有雄性刺山的腹甲会呈现凹陷。

Though a general rule of thumb for turtles concerning sexing ids that males have a longer thicker tail, as well as a concave plastron, this appears to not apply to these turtles as strictly.

性别与繁殖：凭经验来说，龟龟性别判定的重要特征是一条又粗又长的尾巴和凹陷的腹甲，但这几点对于刺山来说，却并不严格准确。

Keywords: Computer graphics,concave polygonal window,line clipping,intersection calculation.

对于一般的多边形窗口的线剪裁，目前尚无有效的算法。

The company products are: single-head magnetic stir even the end of the electromagnetic furnace, electromagnetic single furnace , electromagnetic Siamese pot furnace, electromagnetic single-head soup heaters, electromagnetic heaters concave desktop, desktop plane electromagnetic furnace, four electromagnetic furnace, furnace six electromagnetic, electromagnetic counter steamed rice, steamed seafood counters 3, all-in-one soup heaters, electromagnetic Pa Furnace, electromagnetic oven fried, electromagnetic furnace, steam heaters electromagnetic Qixing.

公司主要生产产品有：电磁单头大炒、电磁连尾小炒炉、电磁单头小炒炉、电磁连体锅小炒炉、电磁单头煲汤炉、电磁台式凹面小炒炉、电磁台式平面小炒炉、四头电磁煲仔炉、六头电磁煲仔炉、电磁蒸饭柜、三门海鲜蒸柜、一体式汤炉、电磁扒炉、电磁炸炉、电磁烫面炉、七星电磁蒸炉。

Then the global optimal solution of the primal programming problem can be obtained by solving the converted D.C.programming problem or concave minimization problem via using the existing algorithms.

再利用已有的关于D.C。规划和凹极小的算法，可以求得原问题的全局最优解。

As the objective function is not strictly concave in the path rate, the penalty function method is applied to transform the primal problem into a new formulation to obtain the optimal solution based on the subgradient method. And the multiPath congestion control algorithm is also proposed.

由于多径效用最大化问题中的目标函数对路径速率而言不是严格凹的，所以运用罚函数法将此最大化问题转化成新的等价形式，再运用次梯度法获得了原问题的最优解，由此提出了用于Ad hoc网络的多径路由优化拥塞控制算法MPCC。

Convex and concave for gripping must be distributed reciprocally in this range.

在此范围内，用于夹持的凹凸处必须一一对应分布。

Based on the former drag reduction experiments of the bionic nonsmooth body of revolution models in the lowspeed wind tunnel, the simulation wind tunnel tests at the wind speed of 44 m/s were performed for the body of revolution models with the tail rectangularly disposed by three different nonsmooth structures, such as the convex dome form with the diameter/height of 1.0/0.5 mm, the dimple concave form with the diameter/depth of 1.0/0.5 mm, and the riblet form with the width/height of 1.0/0.5 mm, in contrast with the body of revolution model with smooth surface.

在前期进行的仿生非光滑旋成体模型低速风洞试验的基础上，将非光滑形态在旋成体模型上的排列方式固定为矩形布置，非光滑的尺寸固定为直径或宽度为1 mm，深度或高度为0.5 mm，在风速为44 m/s时，对布置在模型尾部的凸包形、凹坑形和棱纹形三种非光滑模型与表面光滑模型进行了对比模拟试验。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。