前置的

This external unit interfaces through a USB port and features a 1024 channel MCA with internal preamplifier, computer controlled amplifier, high voltage (0-2048V), upper and lower level discriminators and multichannel scaling for half-life and decay studies.

外置单元通过 USB 接口接电脑，1024道 MCA 和前置放大器，电脑控制放大器，高压（0-2048V ），上平和下平鉴别器和多道测量可做半衰和衰变的学习研究。

Waste sorting and reduction should be a precondition for the construction of incinerators.

但垃圾分类和减量化应该是垃圾焚烧厂建设的前置条件。

In this paper, preamplifier and main amplifier is introduced.

文内主要介绍了前置电路和主放大电路的设计。

Essential condition for a high-End preamplifier, it is accompanied with proportional quality power supply.

完前置必要条件高，它是伴随着电力供应的质量成正比。

It is a switch capacitor circuit which consists of the preamplifier and dynamic latch.

比较器是前置放大器与动态锁存器组成的开关电容电路。

The key to the design of feeble signal sampling system lies in the designing of ultra low noise preamplifier .

设计超低噪声前置放大器是设计微弱信号采集仪器时不可回避的技术问题。

The transimpedance preamplifier in optical fiber communication is designed by applying the 0.6μm CMOS technology.

利用0.6 μm CMOS工艺设计了一种用于光纤通信的跨阻前置放大器。

ABSTRACT :The thesis introduced preamplifier circuit of a weak signal briefly.

摘 要：简要介绍了一种弱信号的前置放大电路。

If receiving a negative acknowledgement or no response, the WTRU retransmits the preamble.

如果接收到否定的确认或者没有响应，该WTRU重发所述前置码。

The velocity, pressure and streamline distribution of the internal flow field of front guide impeller are analysed.

分析了前置导轮内部流场的压力、速度和流线分布情况。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。