查询词典 ND

Important significance of regional tectonic regime to metallogenic capacity of Indosinian and Early Yanshanian granites in southeastern Hunan:A case study of Qianlishan and Wangxianling plutons;2. Yanshanian movement and conversion of tectonic regime s in East Asia;3. The Sm-Nd isotopic results indicate that the Archean tectonic regime and crust growth in Northern China Platform can be divided into two stages.

Sm－Nd同位素研究结果显示，华北地台太古宙构造体制与地壳生长可分为二个发展阶段：2800Ma以前，地壳以幔源物质垂向增生为主；进入2800Ma以后，地壳物质开始进入地幔，并以水平运动为主要构造体制，反映板块构造机制在太古宙晚期地质演化中具有十分重要的作用。

Objective: To observe the treatment effect on port-wine stains with double frequency 532nm wavelength Nd:YAG Laser with variable bandwidth.

目的：观察倍频Nd：YAG532nm波长激光治疗鲜红斑痣效果。

To improve the fatigue strength of TC4, Nd: Glass pulse laser was used to shock the surface of TC4. X-ray stress analyzer was used to test the residual stress of the shocked area, and calculation was done by finite element software ABAQUS.

为提高钛合金的疲劳强度，采用Nd： Glass强脉冲激光对TC4钛合金表面进行冲击强化处理，采用X射线应力仪对冲击区的残余应力场进行测试，并采用ABAQUS有限元仿真软件对其残余应力场进行分析计算。

Nd don't miss the awesome tire tread pattern.

ND 不错过有威严的胎面图案。

Nd∶YVO 4 have the advantages of large laser cross section and short fluorescence lifetime.

利用这一技术并结合具有增益高、荧光寿命短等特点的Nd∶YVO4晶体，配合新型高重复率的电光Q开关，易于实现高频窄脉冲高光束质量的激光输出。

Laser diode-pumped Nd∶YVO4 self-stimulated Raman laser .

激光二极管抽运的自拉曼Nd∶YVO4激光器。

Optical resonant reflector, as a coupled-output mirror of Nd∶YAG oscillator, has very strong ability for selecting longitudinal mode. Three-plan RR has more regular structure of modulated reflecting-spectrum.

光学共振反射器作为Nd∶YAG振荡器的耦合输出腔镜，具有很强的选纵模能力，三面共振反射器具有规则的反射峰调制结构。

Although the Nd and Na in the definition of the number of Voc, they ...

虽然Nd和Na出现在Voc定义的对数项中，它们。。。

In the fifth chapter, the optical characteristics of Nd:YVO4 and LBO are studied.

第五章分析了Nd：YVO_4和LBO晶体的光学特性。

When 1053 nm 20 ns Nd:YLF laser was used as pump in a 3∶1 inverse expansion system are using attenuators to adjust input energy in the rang of 2 to 92 mJ, the rules of transmitted energy and waveform versus input energy are acquired, and compared with the results of focusing pump.

以波长1053nm、脉宽20 ns的Nd：YLF激光器为光源，采用3∶1的缩束系统，通过衰减片调整入射光能量在2mJ—92mJ变化，获得了透射光能量和功率波形随入射能量变化的规律，并与聚焦条件下的结果进行了比较。

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。