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A low intensity laser DNA molecule model is adopted;entropy of poincare map of this model is calulated and then entropy curve of this system with intensity of laser is illustrated.

本文用数值分析方法计算了"低强度激光－DNA分子"系统关于激光场强的熵变；验证了随激光场强的增加系统产生"阵发性"混沌

Terahertz laser pumped by a CO2 laser was used to measure polythene absorption characteristics.

文中利用CO2泵浦THz激光对聚乙烯材料的THz 吸收特性进行了实验研究。

In order to further reveal the damage mechanisms of repetitive frequency laser the influence of repetitive frequency laser pre-conditioning on the absorption of optical coatings was also investigated.

为了进一步分析损伤机制，研究了重复频率激光预处理对光学薄膜吸收的影响。

Locking laser source to a proper frequency standard can obviously improve the laser's frequency stability.

将激光器锁定到合适的参考频率标准上，可以有效地改善激光器的频率稳定性。

Research on the propulsive performance of laser propulsive working medium is one of the most important part in laser propulsion technology.

激光推进工质推进性能研究是激光推进技术研究关注的焦点之一。

Methods of improving the precision of laser proximity fuze with laser pulse-phase detecting system［J］.

脉冲激光鉴相体制提高激光定距精度的几种方法［J］。

In the paper ,the design principles of the laser proximity fuze are described in summary, and the main components and their functions are introduced in brief. Based on above-mentioned ,the design of a new kind of air-to-face missile laser proximity fuze is given emphasis to study .

论文综述了激光近炸引信的设计原理，并简要介绍了其主要组成部分及各部分的功能和设计方法，在此基础上重点研究了一种空地导弹激光近炸引信的设计。

The features of the different kind of FOV configuration in the laser proximity fuze, with detecting target, and the cost of manufacturing in missile are discussed. Based on the experiment, the methods and scope of evaluating the light beam configuration in laser proximity fuze are analyzed. The appropriate situations of each configuration of broad FOV are demonstrated.

针对大探测场激光近炸引信在国内外导弹中的实际应用，综合目标特性、目标探测、判别要求、以及工程实践经验，根据实验结果，重点分析了其常用的四种光束布局方式的特点和适用范围，给出了不同光束布局方式的分析、比较方法。

If the length of laser pulse is extremely short (about 2-3 laser wavelength) and the initial temperature of electrons is not high, there

本文从理论上得到高能电子的分布结果是相当引人注目的，能够解释实验中相应的高能电子的分布情况。

The pulsed Nd:YAG laser cladding is one of the most effective methods of the precise repairing technology. It is decided by the voltage, electric current, pulse length, pulse frequency, scanning speed and beam diameter of the Nd:YAG laser.

脉冲Nd：YAG激光熔覆技术是精密修复塑料模具最有效的方法之一，激光器的电压、电流、脉冲宽度、脉冲频率与激光的扫描速度、光斑直径等工艺参数直接影响着熔覆的质量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。