查询词典 spontaneous emission

A study on the effe ct of slotting technology and surface treatment upon energy resolution for BGO crystal array detector used in positron emission tomography-PET is de scribed.

介绍了用于正电子发射断层扫描仪的阵列式探测器中的BGO晶体开槽工艺和表面处理对探测器能量分辨率影响的研究，并给出了有关的实验结果。

The emission of CH4 and N2O increased basically with acidification cumulation degree.

CH4和N2O的排放基本上随酸化累积程度的加深而增加。

The electroplating waste water contains many heavy metals such as chromium,cadmium,nickel,cuprum,zinc.So the direct emission of it will lead to produce great negative effect for ecosystem,human health,industry production and living.

电镀废水中含有的重金属离子如铬、镉、镍、铜、锌等，直接排放将恶化生态系统，给人类的健康和生产生活造成极大的负面影响。

The field emission current density was increased to a maximum, and then decreased with increasing the oxidation temperature.

用扫描电镜、Raman光谱分别对300~500℃的氧化提纯后的碳纳米管的形貌和结构进行了表征。

Low Drive Current, High Intensity of Light Emission.

驱动电流低，发光强度高。

Conventional alkaline cyanide zinc plating process was compulsively restricted for its emission of toxic and hurtful substances and harm to the environment and human being.

原有的碱性氰化物镀锌工艺存在有毒有害物质排放及对人体的伤害，被国家强制限制。

It is well known that Cyanine is a kind of fluorescence dye which modulated the wavelength of abortion and emission by alter the length of conjugated chain.

众所周知，花菁是一类可以通过改变共轭链的长度来调节吸收和发射波长的荧光染料。

Among them, the absorption and emission wavelengths of cyanine dyes are mostly in the region of 600-800 nm, even beyond of 800 nm, so when they are used as probes, they can achieve the absence or reduction of background absorption, fluorescence and light scattering to improve the detection sensitivity.

其中花菁类染料的最大吸收波长大都在600～800 nm之间，有的甚至超过800 nm ，在制得探针用于生物样品的测定时可以有效避免生物体内自发荧光和散射光的干扰，极大的提高检测灵敏度。

The components of products were analyzed by FTIR and the structure and morphology were characterized by X-ray diffraction and field emission scanning electron microscopy, respectively. The electrochemical performances were investigated by cyclic voltammetry and constant current charge/discharge techniques.

用红外光谱对所制样品的组分进行分析，用X射线衍射和场发射扫描电子显微镜表征产物的结构和形貌，用循环伏安和恒电流充放电等测试方法对其电化学性能进行研究。

As Mo's fly Dasher (formerly thermoelectric companies) important authorized distribution companies, the main products Overall S, M Series Atomic Absorption Spectrometry; IRIS Intrepid II Direct Reading the whole spectrum of plasma emission spectrometry; ARL 3460/4460 Direct Reading spectrometer; ARL 9900 Series X, ARL Advant X Series X-ray fluorescence spectrometer.

作为赛默飞世尔原热电公司）公司重要的授权经销(代理商，主要产品总括 S 、 M 系列原子吸收光谱仪； IRIS Intrepid II 全谱直读型等离子体发射光谱仪 iCAP 6000； ARL 3460/4460火花直读光谱仪； ARL 9900 系列 X 、 ARL Advant X 系列 X 射线荧光光谱仪。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。