查询词典 spontaneous emission

The nanocomposite particles were characterized by X-ray diffraction, field-emission-scanning electron microscopy, differential thermal analysis, vibrating sample magnetometry and HL-5 hall effect testing.

用X射线衍射、场发射扫描电镜、差热分析、振动样品磁强计和Hall效应测试系统对样品进行了表征。

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。

Three of them had fluorescence emission maxima at 77K at 680-682 nm.

它们的荧光发射峰都位于680—682nm范围内。

Results: The complex of astrogaloside and vanillin had excitation and emission maxima at 365 and 430 nm , respectively.

结果：黄芪甲甙与香草醛的反应产物的最大激发波长Ex=365 nm，最大发射波长Em= 430 nm。

The results show that the emission probability behaviors in the non-degenerate two-photon mazer differ from those in the degenerate two-photon mazer,since two cavity modes are allowed in the mazer so that there are two freedoms changing the potentials that the atoms experience as they transit the cavity.

发现由于在微脉塞中存在两种腔场模式，导致有两个自由度来改变原子在经过腔场时所受到的势场，因此非简并双光子微脉塞的发射几率的行为不同于简并双光子情况下的发射几率。

An acoustic-emission pulse contains a very wide range of frequency components, extending up into the megacycle range.

声发射脉冲就包含一个很宽的频率组成范围，可扩展到兆赫。

The fluorescence signal revealed by this process is specific and exhibited in the near red spectrum region with emission maxima at 595nm, and it could be competitively inhibited by menadione.

萤光分子所释放出来的长波长讯号(595nm)具有独特的识别性质并且靠近红外光之区域范围，而萤光分子的释放会被维他命K所抑制。

In the described system, in order to transmit the narrow-band analog signals or low speed digital signals at any time and under any climatic condition, sun-blind-region ultraviolet is used as information carrier, the modulated low voltage mercury-vapor lamp is used as emission device.

所描述的系统是以日盲区紫外光作为信息载体的，用被调制的低压汞蒸汽紫外放电灯作为发射器件，以日盲型滤光片和光电倍增管或日盲型紫外光电倍增管作为接收器件，以达到在任何时间和在任何气候下完成窄频带模拟或低速数字信号的传输。

Nitrogen oxides emission from a series of turbulent methane jet non-premixed flames with different Reynolds number was numerically simulated, in order to investigate the influence of turbulence on the formation of nitrogen oxides.

对一系列具有不同Reynolds数的湍流甲烷射流扩散火焰中氮氧化物的排放进行了数值模拟，以考察湍流对氮氧化物排放的影响。

In the range of ～20 MeV/u, the preequilibrium emission takes place.

在低中能如～20MeV／u附近，反应过程中产生了一些非平衡发射。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼