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The propagation of picosecond deep ultraviolet laser pulse at wavelength of 193 nm in air is numerically investigated.

我们对193nm深紫外激光在大气中的传输进行了研究。

Furthermore, it will be an effective way to record the spatial energy distribution of picosecond ultrashort pulse, even of femtosecond.

实验结果表明，通过上述方法得到的分布图达到了比DataRay公司的Taper-CamD-UCM-20-15型光束分析仪要高的图像分辨率，是一种记录ps、甚至fs超短光脉冲空间能量分布的有效方法。

Transmitted pulse shape can be adjusted by controlling loss.Response speed is about picosecond order.

输出脉冲形状可通过控制损耗进行调解，响应速度为皮秒量级。

The challenges of the future will be: use picosecond Ultrashort Pulse Laser Ablation technology to optimize.

不兵来所回避的挑衅不兵是：搁置皮秒超不幼脉冲激平来优化烧蚀工艺。

Experiments of gated-mode single photon detection are performed using two picosecond laser pulses with different pulse shapes.

采用两种不同的皮秒光脉冲波形进行了门模单光子探测实验。

Gathering 188 PCOS patients clinical material: The ordinary circumstances (age, BMI, WRI, acne, pilosity, suggestion and aggravation factor), the menstruation situation, the pregnancy situation, the heredity factor, the symptom and the tongue coating ,pulse condition.

采集门诊188例PCOS患者的临床资料：一般情况(年龄、体重指数BMI、腰臀比WHR、痤疮、多毛、诱发及加重因素)、月经情况(包括闭经、稀发、频发、过多、不规则出血及部分月经规律者)、妊娠情况、遗传因素、其它症状及舌苔脉象。

The angle distribution and plane distribution of the diffraction tomography with ultrashort pulse incident wave was simulated.

模拟计算了超短脉冲波场入射下其衍射层析的角分布与面分布。

Considering the ionospheric refractive index in geomagnetic field, the radiowave polarization plane rotation has been calculated. For linear frequency modulation pulse signal, the expression of Doppler shift error due to ionospheric dispersion characteristics is derived.

本文还计算了考虑地磁场时电离层双折射指数特性引起的电波极化面旋转角，推导出对于线性调频脉冲信号电离层介质色散特性引起的合成孔径时间内多普勒频移误差的表达式。

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。

Irradiation from a Q-switched Nd: YAG laser (pulse duration: 12 ns, repetition rate: 10 Hz) was focused onto the sample surface by a plano-convex lens with a spot diameter of about 1 mm to ablate a portion of sample and generate a micro plasma.

一个平凸透镜把斑直径大约为1 mm的光量开关Nd： YAG激光器（脉宽：12 ns；重复频率：10 Hz）辐照聚焦于样品表面，用来烧蚀样品的一部分，形成一个微等离子体。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐