凹的

Two flat lateral zones 12, parallel to the plane of symmetry X, each of which located near one end of the concave central area 11

两个平的横向区域12，平行于对称面X，各个横向区域12位于靠近凹入中心区域11一端的地方

Point P'' is the intersection point of the concave area 11 with the cross-sectional plane of symmetry Y parallel to the reference axes y and z.

点P，为凹入区域11与平行于参考轴y和z的横截对称面Y的交点。

The influence of KTP's thermal effect was controlled and the efficiency of the frequency doubling increased. The steady working of KTP crystal in high power level was realized. 3. A traditional plano-concave cavity was used.

采用传统平凹腔，分析了高泵浦功率下Nd：YAG棒热透镜效应和热致双折射效应的影响，得到了高功率激光器运行在第Ⅱ稳区并且基模体积受到限制的结论。

A theoretical model based on the six-temperature mode rate equations is suggested to interpret such a phenomenon, which is used to calculate the wavelength-temperature shift relation of a TEA CO2 laser with plano-concave stable resonator.

通过建立六温度理论模型，用数值计算的方法揭示了平凹稳定腔脉冲TEA CO2激光器输出波长的温度漂移规律。

In order to study the output characteristics of diode-end-pumped Nd:YAP laser operating at 1341.4nm,the thermal focal lengths of end-pumped Nd:YAP laser were calculated and measured,and the output results of lasers with plane-plane and plano-concave resonators were compared respectively.

为了研究Nd：YAP晶体在LD端面抽运中的1341.4nm激光输出特性，采用理论计算和实验测量了实验系统的热焦距，对比了平平腔和平凹腔激光输出结果。

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。

A simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope .

有凹槽使得作用在绳子上的力量能够改变方向的轮状简单机械。

Unfortunately he rode his bike over a pothole. Suddenly there was a BANG! His front tire blew out.

糟糕的是，自行车陷进一个凹坑里，突然发出砰的一声！

Suspended device: Stick the cupules to the wall or glass, insert the pothook into theflute on the back of the display exactly, slightly press, hang the device on the hook

悬挂式装置：先固定吸盘在玻璃或墙壁上的位置，然后将挂钩对准显示器后面的凹槽插入，轻轻挤压

Consists of baled sorted, fresh newspapers, not sunburned, free from magazines, white blank, pressroom over-issues, and paper other than news, containing not more than the normal percentage of rotogravure and coloured sections.

特级旧报纸：经过拣选且不受潮的废报纸，打包供货。此类旧报纸既没有受太阳光的曝晒，不含杂志、空白纸张、印刷厂过期报刊和其他杂废纸，其凹印和彩色部分不超过正常数量。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了