查询词典 ND

Using Nd:YAG laser (with a wavelength of 1064nm and a pulse width of 10ns) ablate copper target in air to observe the emission spectra of plasma.

利用Q-开关Nd：YAG激光器产生的1.06μm、10ns的脉冲激光聚焦在空气中的Cu靶上，观测了激光诱导的Cu等离子体发射光谱。

In this thesis, the study results of the basic characteristics of laser-ablation Cu plasma are given, Following are the details, The research of laser induced Cu plasma emission spectra in airUsing Nd:YAG laser (with a wavelength of 1064nm and a pulse width of 10ns) ablate copper target in air to observe the emission spectra of plasma.

本论文采用光谱方法对激光烧蚀产生的Cu等离子体的基本特征进行了实验研究，主要内容有：空气中激光烧蚀Cu产生等离子体发射光谱的研究利用Q-开关Nd∶YAG激光器产生的1.06μm、10ns的脉冲激光聚焦在空气中的Cu靶上，观测了激光诱导的Cu等离子体发射光谱。

An Nd:YAG Q-switched laser operating at a wavelength of 266 nm, a pulse duration less than 10 ns, and a repetition rate of 10 Hz, was used to ablate a ZnO target of 99.9% purity.

所使用的光源为Nd：YAG Q-switched雷射，其波长为266 nm、脉冲宽度小於10 ns、重覆频率10 Hz；使用的靶材为纯度99.9％的氧化锌。

In order to measure the tuning wavelength of a frequency-doubled Nd:YAG laser,strong absorption lines of molecular iodine near 532nm was adopted to provide the absolute reference for frequency stabilization.

为了精确测量倍频Nd：YAG激光器的调谐波长，采用碘分子在532nm附近的强吸收谱线作为频率稳定的绝对参考谱线，建立了以碘蒸气为标定物的激光调谐波长测定系统，实际测量了碘蒸气吸收谱线。

Absolute Frequency Stabilization of Diode-laser-pumped Nd:YAG Lasers to Hyperfine Transitions in Molecular Iodine. Opt Letters 1992; 17: 1204

我们认为，P(52)32-0完全可能成为未来的国际推荐谱线，在532nm Nd：YVO4/KTP倍频激光的调谐范围内使用。

Based on the analytical theory of aeolotropy,thermal distortion and temperature field distributions of Nd∶YVO4 crystal with rectangular section were investigated when the third thermal boundary condition was considerated.

以各向异性半解析热分析理论为基础，研究矩形横截面Nd∶YVO4激光晶体在有第三类热边界条件工作时，激光晶体温度场分布和晶体抽运面热形变分布。

A STUDY OF Sr AND Nd ISOTOPIC GEOLOGY DURING ANATEXIS IN THE AREA NO.

8411地区深熔作用的Sr，Nd同位素地质研究

With the development of anatexis, the difference between the derivatives and the parent rocks in Nd isotopic composition became smaller and smaller until approaching to disappearance at last.

随着深熔作用的进行，两者Nd同位素组成的差异越来越小，最后几乎完全消失。

Objective To study the efficiency of long pulse tunable 1 064nm Nd:YAG laser in the treatment of angioma serpiginosum.

目的：探讨可调长脉冲1064nm Nd：YAG激光治疗匐行性血管瘤的有效性。

Interception of lyphatic drainage by Nd:YAG laser irradiation in rat urinary bladder ［J］.Lasers Surg Med,1984;4（2）:167-172.［10］Shanghai Neoplasm Hospital.

我们的实验结果提示，在普通手术或CO2 激光手术切割肿瘤之前，可结合使用Nd-YAG激光，先用Nd-YAG激光做肿瘤周边小范围的封闭照射，就可大大减少肿瘤转移的机会。

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。