谱

In source collision induced dissocation technique was used to study atrazine and diazionon,two pesticides with low volatility,high polarity and thermal lability.

气相色谱法和气相色谱质谱法在农药残留分析中广为应用，但在分析热不稳定、强极性和难挥发农药时往往需要结合衍生法。

In this technique, K-L transformation was used to remove spectral statistic correlation on the spectral direction. Then SNMAW prediction tree technique was used to remove spatial correlation and spectral structure correlation. With the limit of a certain max error, this technique can get a higher compression ratio. 6. We proposed a lossy compression technique based on wavelet transformation with sharing significance map.

该方法在谱维方向进行K-L变换，有效地去除谱间统计冗余，而变换后的图象仍存在空间相关性和谱间结构相关性，再利用改进的预测树方法方法进行无损压缩，在最大误差很小的限制下，得到较高的压缩效率。

Focused on a resonance-grounded power system,a new method of selecting faulted line based on multifractal spectrum of the zero-sequence current is presented.

系统阐述了多重分形和多重分形谱的小波局部极大模计算方法，提出了利用多重分形谱对线路的零序电流进行分析，根据谱图进行判断故障线路的新方法。

First, experimental datum is analyzed and it is found that the shallow water ocean internal wave spectrum is different from that of the deep ocean GM spectrum. Then, the theory of weak turbulence is systematically summarized, and Lvov and Tabak's method of obtaining the deep ocean internal wave spectrum is introduced. They applied the theory of weak turbulence to internal waves of long wave length and found that GM spectrum maybe obtained theoretically.

首先，基于海洋实验数据分析了浅海内波谱特性，指出它与深海GM谱不同；接着，系统地总结了Zakharov等人发展的基于波-波相互作用的弱湍流理论，对文献中没有给出推导的一些关键性公式进行了细致的推导，并讨论了Kolmogorov-Zakharov谱在海洋内波研究方面可能的应用；最后，总结了Lvov和Tabak对于深海GM谱的弱湍流理论解释；介绍并细致推导了Madja、Mclaughlin和Tabak(1997)提出的一维MMT模型及其特性。

The on-line wheel dressing monitoring experiments were made to investigate the bispectrum feature of acoustic emission signals when the diamond sharpness ratio was sharp, middle blunt and blunt, and a diamond blunt feature extraction method based on main diagonal slic...

通过砂轮修整过程在线监测实验，分析了金刚笔在锐利、中等钝化和钝化状态下，修整过程中声发射信号的双谱特征，提出了归一化双谱模对角切片特征提取方法。研究表明，采用基于声发射的双谱分析方法可以有效监测砂轮修整过程中金刚笔的钝化状态。

"Mass spectroscopy A mass spectrometer uses electrical means to detect the sorted ion s, while a mass spectrograph uses photographic or other nonelectrical means; either device is a mass spectroscope."

质谱计利用电场来检测分类好的离子，质谱仪则用照相或其它非电的方法来检测；两种设备都是质谱测定仪。

"Mass spectroscopy A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph uses photographic or other nonelectrical means; either device is a mass spectroscope."

质谱计利用电场来检测分类好的离子，质谱仪则用照相或其它非电的方法来检测；两种设备都是质谱测定仪。

The isotopic composition of hydrogen and oxygen in heavy water are analyzed by using a high-resolution mass spectrometer.

用高分辨率质谱计分析了重水中氢与氧的同位素组成；分析了重水的分子组成、质谱中的单电荷离子；利用高分辨率质谱峰相对强度，计算了重水中的氢氧同位素组成。

This kinds of compounds were confirmed by their ~1H-NMR,~(13)C-NMR and mass spectrum.

所得的一系列新的烷基呋喃脱氧戊糖苷经过核磁共振氢谱、碳谱及质谱分析后确定了这些新的糖苷衍生物。

The power spectrum density and mean square value of acceleration at every output position including the driver's seat are computed by means of solving the frequency response function, so as to show the changes of vibration magnitude through parameter-transformation.

在计算中除考虑了多点输入的自谱及前后轮之间的互谱外，还根据有关路面资料考虑了左右轮之间的互谱。结合乘坐舒适性研究，绘出了座椅振动量随各参数变化的一些规律，可为今后设计工作参考。

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