查询词典 electromagnetic spectrum

High energy electron initiates the electromagnetic shower and then generated a lot of bremsstrahlung and secondary electrons with wide spectrum.

高能电子会引发电磁簇射，从而产生大量且能谱相当宽的韧致辐射光子及次级电子。

The sun produces a continuous spectrum electromagnetic radiation with waves various lengths.

太阳产生一个连续的具有不同波长的电磁辐射光谱。

The far-field analytical expressions for the electromagnetic fields of a cylindrically polarized vector beam propagating in free space are obtained based on the vector angular spectrum and the method of stationary phase.

基于矢量角光谱法与静态位相方法，推导出了矢量圆柱偏振光束在自由空间传输的电磁场的远场解析表达式。

It is so named because the spectrum consists of electromagnetic waves with frequencies higher than those that humans identify as the color violet .

它是如此命名是因为频段的电磁波组成的频率比那些人类的颜色紫确定更高。

The light on our convention meaning is visible light, this part light is the one fraction of electromagnetic wave spectrum only.

我们常规意义上的光是可见光，这部分光只是电磁波波谱的一小部分。

If you look at the history of research on nonionizing radiation (the energy waves below the frequencies of visible light on the electromagnetic spectrum), you will see that nonthermal effects were first reported decades ago, but were deemed to be research mistakes.

如果你看看历史的研究nonionizing辐射（能量波的频率低于可见光的电磁波谱），你将看到，非热效应首次报道十年前，但被认为是研究的错误。

Another refinement of our ladder is the fact that we have observed the Cepheids in the near-infrared parts of the electromagnetic spectrum where these variable stars are better distance indicators than at optical wavelengths.

我们这些距离台阶的另一个改进是：我们已经观测了造父变星的近红外波谱，这些变星在红外电磁波段的量天尺性能比可见光波段更好。

For example, the sun, which has a surface temperature of about 5500 C (10,000 F) emits most of its radiation in the visible part of the electromagnetic spectrum.

以太阳为例，它的表面温度约5500摄氏度所发出的辐射绝大部分在电磁频谱的可见光波段。

Until then, his main concern had been electromagnetic shielding, investigating materials that act as barriers to electromagnetic radiation above the visible spectrum.

在这之前，他的主要研究方向是电磁屏蔽，即对非可见光有屏蔽作用的材料。

Electromagnetic compatibility and Radio spectrum Matters;ElectroMagnetic Compatibility standard for Very Small Aperture Terminal, Satellite News Gathering, Satellite Interactive Terminals and Satellite User Terminals Earth Stations operated in the frequency rangesbetween 4 GHz and 30 GHz in the Fixed Satellite Service FSS

您当前所在的位置：首页→标准大全→欧洲电信标准→电磁兼容和无线频谱事务甚小孔径终端，在固定卫星业务中运行于 4 GHz和30 GHz频率范围的卫星新闻采集，卫星交互终端和卫星用户中断地面站的电磁兼容标准

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。