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On the other hand, the linear deviations of the active voltage biasing circuit with Bipolar Transistor or FET were at most 7%, and at most 3% respectively.

结果:在阳极电流为50 μA,电阻型光电倍增管偏置电路的线*偏离度已达40%,而用双极*晶体管或场效应晶体管的有源偏置电路的线*偏离度分别为≤7%,≤3%。

PbWO4 and CeF3 which are newly developed inorganic scinti1latr in our country have been studied. Photo-electricity detector systemes which have high γ sensitivity and relative insensitive to neutron and fast time response were assembled by using CeF3 and photomultiplier tube. The ratio of signal-to-noise for γ ray detection can be up to more than 10 times in close distance n,γ commix pulse radiation field by using this detector system.

对PbWO4和CeF3等近年国内新研制的无机闪烁体进行了系列研究,使用CeF3分别配光电倍增管和光电管,组合出了对γ辐射灵敏度高,对中子相对不灵敏,同时脉冲响应也快的光电探测系统,应用以此为基础的探测技术在近距离n,γ混合脉冲辐射场中,可将脉冲γ辐射探测信噪比提高一个量级以上。

The rapid development of Chinese economy makes the dweller's income times add, created stronger consumptive capacity.

中国经济的快速发展使居民的收入倍增,并创造了更强的消费能力。

Results Stable drug-resistant SW1990/GZ cell strain was established by culturing with gemcitabine for 9 months. The morphology and growth characteristics of the cell strain changed remarkably. The cells shrinked and became rounder; its endoplasm expanded; granular substances increased; and the doubling-time was prolonged. Resistance of the cell line to gemcitabine, fluorouracil, adriamycin, and mitomycin significantly increased. The TrxR activity of the drug-resistant cells was increased markedly.

结果 药物培养9个月后,得到稳定传代的SW1990/GZ耐药细胞株;其形态学、生长特征等均发生了明显变化,细胞变圆、体积缩小、内质网扩张、颗粒样物质增多及细胞倍增时间延长;对吉西他滨、5-氟尿嘧啶、阿霉素和丝裂霉素的耐药性均显著增加;耐药细胞的TrxR活性也明显增高。

A backscatter fiber is used to expand the width of laser pulse. A locking filter is added to dual F-P etalon. Photo Multiplier Tube is used to detect the intensity of light and a frequency tracking circuitry is designed.

使用散射光纤对激光脉宽进行扩展,在双通道标准具的基础上增加专用于频率跟踪的通道,使用光电倍增管检测光强,设计制作了基于采样的频率跟踪电路。

A two fish, there are 5000 to 16000 bacteria, their main source of gills, showing that the multiplication of bacteria's rapid development.

两鱼,有5000到16000的细菌,其鳃的主要来源,显示出细菌的快速发展倍增。

Methods Corneal epithelial cells of limbal, peripheral and centeral cornea were removed using improved enzymatic disaggnegation and cultured in vitro. The cells were counted in a hemocytometer at different time to determine the doubling time .

用体外细胞培养的方法,从生长曲线、细胞倍增时间、细胞DNA合成的活跃程度等几个方面,观察人角膜缘部、周边部及中央部角膜上皮细胞的生长特征。

The photomultiplier tube responding to direct neutron irradiation has an extreme effect on the scintillation detector design and its practical applications.

光电倍增管的中子直照响应对脉冲中子探测器的设计和实际应用具有重要影响。

The Hamamatsu R5924 photomultiplier tube of mesh type will be used for the time-of-flight counter of the Beijing Electron-Positron Spectrometer III.

北京谱仪III中的飞行时间探测器将采用滨松公司生产的细网型光电倍增管R5924。

The growth of nationalist sentiment in China has coincided with a double-digit increase in China's military spending every year since the mid-1990s.

中国爱国情绪的增长恰好与中国自20世纪90年代中期以来每年在军事上花费上的双倍增长相符。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。