查询词典 Wavelength

Its leakage current is lower than 5nA at room temperature. The quantum efficiency in the wavelength range of 400-500nm is about 83%. The junction capacity is about 110-120pF. The noise level of PIN+PreAmp system is lower than 527e at -25C. The PIN diodes have passed the long-term stability test. All the main performances of our PIN diodes meet the requirement of ALICE/PHOS,and some of them are even better.

本工作研制的PIN硅光电二极管的灵敏区面积为16x17mm2，常温漏电流小于5nA，紫光区量子效率约为83%，结电容为110-120pF，以及由PIN光电二极管与电荷灵敏前置放大器组成的读出系统的噪声水平在-25℃下小于527个等效噪声电荷，并经过了长期性能稳定性的考验。

KEY WORDS］ ofloxacin; dexamethson sodium phos phate; ultraviolet spectrophotometry; double-wavelength spectrophotometry

关键词］氧氟沙星；地塞米松磷酸钠；紫外分光光度法；双波长分光光度法

Results The optimum condition was μ-Bondapak C18 column with acetonitrile-water-0.05% phosphonic acid gradient elution system, 1.0ml min^(-1) flow rate, 267 nm. detection wavelength and 23~26℃ temperature. The analysis ended within 45 min.

结果 在色谱柱为μ-Bondapak C183.9mm×300mm，10μm；流动相A相为乙腈，B相为0.05%的磷酸水溶液；流速为1.0ml/min；检测波长是267nm及温度为23~26℃的条件下；经45min梯度洗脱，成功的分离分析了桂枝汤中的4个成分。

In addition, the recombination for large numbers of charge carriers would occur in the volume or on the surface of TiO_2. Therefore, the extension of the photoactive wavelength region of TiO_2 into the visible region and improvement of quantum efficiency are desirable for popularizing more TiO_2 photocatalyst, especially under solar light for industrial areas or poor interior lighting illumination in living spaces.

但纳米TiO_2具有较宽的禁带宽度，只能吸收太阳光中5%左右的紫外线，而太阳光中近45%的可见光在处理污染物中却得不到有效利用，因此太阳能的利用率较低，这就限制了其实际使用范围；另外，TiO_2半导体载流子的复合率较高，因此量子效率较低。

When applying this instrument to observe or photo the bands of DNA and RNA, the distictness can be compared with that of same type instrument produced abroad and the shadow of the light tubes which is always appeared on the photofilm will be wliminated because the ultraviolet light with various wavelength is applied in this instrument.

对 DNA 和 RNA 的条带进行观察和拍摄时，因采用各种波长紫外光，所以其清晰度可接近国外同类仪器的水平，并排除可在照相底片上出现灯管阴影的现象。

The OPI1268 optoisolator combines a high efficiency GaAlAs LED with a peak wavelength of 850nm, optically coupled to a Photologic photodiode in the output IC.

OPI1268光隔离器集成了高效率的GaAIAsLED，峰值波长为850nm，光学连接在输出集成电路的光电逻辑光电二极管上。

Because the photospheric temperature of carbon stars are less than 3000K and the temperature of rich-dust envelope formed by the mass loss is lower, and therefore most of the energy from carbon stars are radiated between 1 to 60um range, in which the vibrational and ro-vibrational bands of many molecules also lies, the study of infrared spectra in this wavelength range is very important to reveal chemical compositions, dust formation process, the atmospheric structure and evolutionary status of stars.

碳星光球的有效温度不超过3000K，同时较大的质量损失率形成了富碳的尘埃壳层，以致于它的辐射能量主要集中在1—60μm的红外波段上，并且许多分子的转动振动能谱也集中在红外，因此在红外波段的研究对揭示碳星化学成份及其分布、尘埃形成过程、恒星大气结构和演化状态都有十分重要的意义。

Wavelength-selective or photoselective mulches absorb photosynthetically active radiation and transmit solar infrared radiation.

波长选择性或光选择性塑膜吸收光合活性辐射并传递太阳红外辐射。

Photothermic and photochemical action will be triggered by the radiation of IPL. On one hand, IPL will promote collagen reproducing and recombining which makes the skin more flexible and smooth. On the other hand, the light with long wavelength can easily pass through epidermis layer and will be absorbed selectively in priority by pathological pigments which will be destroyed by high heat, and get the effect of remove pigmentations, vascular lesions and unwanted hair.

当强脉冲光照射皮肤时，会产生生物刺激作用和光热解作用，一方面使皮肤中的胶原纤维和弹力纤维再生并重新排列，恢复皮肤弹性，从而减轻皱纹；另一方面，强脉冲光能穿透皮肤，被组织中的病变色素团优先选择性吸收，热能在不破坏正常皮肤组织的前提下，击碎病变色素团，从而达到治疗毛细血管扩张，祛除色斑，和脱除多余毛发的效果。

The devices are piezoelectrically tuned. The devices would be largly used for signal processing, sensor, wavelength division multiplexing systems, coherent communication systems, and particularly optical frequency division...

滤波器采用压电元件调谐，在信号处理、传感器、波分复用系统、相干光通信系统、特别是近几年才发展起来的光频复用系统中将得到广泛的应用。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了