查询词典 emission spectrum

Results Artery wall,vessel lumina and flow can be displayed by color Doppler flow imaging directly.Hemodynamics change can be displayed by spectrum Doppler.

结果 彩色多普勒血流显像可以直观地显示动脉管壁情况、管腔回声及血流充盈情况，频谱多普勒可以显示血流动力学改变。

The results showed after black radiation background was deducted,two radiation peaks of 2～2.5 μm were present in infrared radiation spectrum of the acupoints.

结果发现扣除黑体辐射本底后，穴位红外辐射光谱上出现 2～ 2 。5 μm和 15 μm两个辐射峰。

Methods: A high sensitivity PHE201 body surface infrared spectrograph was used to detect 1.5~16 μm infrared radiation spectrum of left and right point LR14 and non-acupoint of 68 patients with hyperplasia of mammary gland.

采用高灵敏度PHE201体表红外光谱仪，检测68名乳腺增生病患者左、右期门穴与非穴位对照点体表1.5~16μm波段的红外辐射光谱。

Methods: A high sensitivity PHE201 body surface infrared spectrograph was used to detect 1.5~16μm infrared radiation spectrum of hyperplastic tissues and both left and right LR14 of 68 patients with hyperplasia of mammary gland.

采用高灵敏度PHE201体表红外光语仪，检测68名乳腺增生病患者乳腺增生肿块1.5~16μm波段的体表红外辐射光谱并与自身左右期门穴对照。

Good agreement between theoretical prediction and simulation analysis has been achieved. The applicability of this approach to the engineering design of magnetrons has been proved, and evaluation for different structures of the anode block is given by the analysis of mode separation in term of mode spectrum pattemn.

仿真结果表明有限元法程序计算结果与场论计算结果能很好地吻合，证实了本方法用于指导磁控管工程设计的可用性，并给出了评估不同磁控管阳极结构的模式分隔特性的模谱分布图。

To improve the output spectrum of magnetron and make simulated model near to the practical structure,considering the practical structure of the permanent magnet and soft magnet,the magnetic field system of microwave oven magnetrons was modeled and simulated using MAFIA.

为了改善磁控管的输出频谱，使模拟结构更接近实际情况，考虑了磁钢和极靴的实际尺寸。

In salsa music the maracas have become one of the most important percussion instruments because they add a driving pulse in the high frequency spectrum.

在萨尔萨音乐中，砂槌逐渐成为一种很重要的打击乐器，因为它在快速进行的歌曲中加入了一种如持续脉冲般的节奏感。

CFEL's were compared with other similar devices such as cyclotron autoresonance masers and free-electron lasers in detail, which can also be operated in this portion of the spectrum. In the fourth chapter, a limitation was shown to be imposed on the power capacity and power output of a CFEL device at high frequency operation.

第四章分析了工作频率升高时契伦柯夫自由电子激光功率容量和输出功率受到的限制；为了解决这个问题，提出了多电子束契伦柯夫自由电子激光的概念并进行了理论研究。

Based on the theoretical model coupling Maxwells equation with the rate equation of 4 level inverted population, the numerical simulation is made via the FDTD method and MATLAB programs. The simulation results show that 1. With the increase of the pumping rate, both the localization of the electric field and the spectrum mode numbers will change; 2. The lasing threshold decreases by increasing the size or concentration of the scatters; 3. The lasing threshold also decreases by increasing the size of samples or strengthening the sample randomness.

在理论和实验研究的基础上，利用麦克斯韦方程与四能级反转粒子数的速率方程相耦合的理论模型，采用时域有限差分方法和MATLAB程序对随机激光泵浦阈值特性进行了数值模拟与计算，模拟结果显示：随着泵浦速率的增大，出现了阈值前后电场强度局域态及频谱模式数的改变；随着散射体粒径的增大，浓度的增大，阈值呈现下降的趋势；随着样品长度的增大，随机强度的增强，阈值也呈现下降的趋势。

Now PR pros have to understand how to leverage a broader spectrum of mediums.

现在公关的利弊，要了解如何充分利用更广泛的媒介。

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

A: I hear Mr. White wants to run for the Presidency!

我听说怀特先生要参加总统竞选！