放大比

In order to carry constant current bias amplifier and to raise the precision of the differential amplifier of the voltage amplification stage, an overly highly precise constant current circuit is adopted as the bias circuit used as criteria of operation, and the supply voltage variation supression ratio is raised much more.

为了执行恒流偏置放大器和提高精度的差分放大器的电压放大阶段，过于高精度恒流电路采用为偏置电路用来作为标准的运作，以及电源电压的变化抑制比筹集更多。

The equipment provided with all necessary function of testing,not only can measu re the OTF of camera and afocal system, but also measure focal length, angular m agnification and transmission and so on.

杨红大口径可见光到红外波段OTF测试仪测量功能齐全，即可测量照相系统、望远系统的光学传递函数，并且兼有测量焦距、放大率和光谱透射比等参数的功能。

The concentration of Jasminum flavonoids in the product was 11.63%- 13.02%, with developed nearly 10 times when compared with that of raw material.

纯化工艺放大实验能达到预期效果，纯化产品总黄酮含量为11.63％～13.02％，比原料中总黄酮含量提高了近10倍。

We obtain a optical image amplification with high gain factor of 1583 in doped lithium niobate crystals.

并在掺杂铌酸锂晶体中获得了高信噪比，信号光增益高达1583倍的光像放大。

In consideration of the in-pulse phase modulation and Doppler frequency rate-of-change's subtleness, a fast and accurate algorithm is proposed. The influence to parameter estimation with phase modulation is dismissed by time domain correlation between neighboring pulses. Signal noise ratio is increased by frequency domain accumulation.

该文针对信号脉内相位调制和多普勒频率变化率信息非常微弱的特点，提出了一种快速高精度估计算法，通过相邻脉冲间的时域相关消除了相位调制对参数估计的影响，频域积累增强了信噪比，利用脉冲间的相参特性进行频谱相关消除了相位模糊，并放大了多普勒频率变化率信息。

Firstly, A precise batch-distilling tower, which would be adaptable to operate in industry or middle scale experiment, has been designed and set up. The optimized operation conditions of reflux (80?1), vaporing quantity ( 9~10 mL?min-1), and raw material concentration (60% mass of 2-methyl-1-butanol) were found.

首先在小试研究成果的基础上，放大设计并建造了适合2-甲基-1-丁醇与3-甲基-1-丁醇的分离的中试或小规模工业化生产的间歇精馏装置，并以此装置作为实验装置进行了工业化试验，得到了该塔的最优操作条件：回流比80、汽化量9~10ml/min、原料中2-甲基-1-丁醇的质量百分浓度约为60%。

This instrument consists of three parts:optical system,signal amplifying and controlling system,and display system.

本文报导了一种利用激光实时测量高温物体比辐射率的系统由光学系统、信号处理与放大系统及显示系统三部分组成。

The common-mode interference is always interfused with the weak velocity signal of the electromagnetic flowmeter,which can be amplified by the signal processing circuit.

电磁流量计输出的流速信号非常微弱，且常叠加共模干扰，经信号调理电路放大后，会导致信噪比很低，甚至淹没有用信号。

Based on the above theories, some vibration characteristics of longitudinal acoustic horns are analyzed with finite element analysis software ANSYS. Some factors influence to large end amplitude distribution is studied such as big end diameter, length of horn, and diameter ratio of big end to small one. In addition, we carry on analysis and research to resonance frequency of large cross-section acoustic horn, amplitude magnification factor, wave node position of horn, transverse vibration situation and so on, and some related change rules are obtained.

在此基础上，通过有限元分析软件ANSYS对纵向超声变幅杆进行了振动特性分析，研究了变幅杆的大端直径、变幅杆长度、大小端面直径比对大端面振幅分布的影响，并对大截面变幅杆的谐振频率、振幅放大系数、变幅杆的波节点位置，横向振动分布等进行了分析研究，总结了相关的变化规律。

If your subject is smaller than a car, take a step or two closer before taking the picture and zoom in on your subject.

如果说拍摄物体比一辆轿车要小的话，那拍之前得往前走两步并使用变焦进行放大。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。