前置

In order to read out hot response signal of the detector, we should use the pre-amplifier to prevent the conversion or enlarge signals and pretreat, which satisfies the flowing signal processing.

为了有效读出探测器的热响应信号，需要利用前置放大器进行阻抗变换或者信号放大以及预处理，以便满足后续信号处理的要求。

Mainly by the alarm detection circuit, pre-amplifier circuit, A/D conversion, microprocessor control circuits, alarm circuits, etc., to achieve the concentration of the gas collection and alarm control.

该报警器主要由检测电路、前置放大电路、A／D转换、微机控制电路、报警电路等组成，能够实现对矿井瓦斯浓度的采集和报警控制。

The main research of this paper is about the pre-amplifier used in thenuclear radiation examination, in view of gamma ray's characteristic affectionon the matter, the electric circuit's noise and disturbance are restrainedbased on the nuclear electron theory.

本文主要研究用于核辐射检测的前置放大器，针对γ射线与物质相互作用的特点，运用核电子学的理论解决电路中的噪声和干扰问题。

It is also need to adjust the electric circuit. Choose the pre-amplifier operating point, use the shield and the earth, etc against the jamming to achieve the goal of low noise and high signal.

此外，还需适地调试电路，选择前置放大器的工作点，采用屏蔽和接地等防干扰措施以达到低噪声高信噪比的最终目的。

Introduction of pre-conditioning pumps on the role of ...

前置导叶调节对水泵的作用。。。

YE62 series of dynamic data acquisition system supports a wide range of pre-conditioning input and automatically identify the type and parameter settings, constitute a multi-functional dynamic testing and analysis system.

YE62系列动态数据采集器支持多种前置调理器的输入，并自动识别类型和进行参数设置，构成多功能动态测试与分析系统。

The optimizing fracturing design chiefly includes fractures parameter optimization of fracturing wells, the volume of pre-conditioning fluid and preflush, the optimization of pump parameter and program, the optimization of fracturing technology parameters (Optimizing various kinds of proppant, concentration, volume and program and the adding way to optimize the reasonable operation parameters so as to improve the fluid diversion in natural formation fractures and main fractures).

压裂优化设计主要包括压裂井裂缝参数优化；预处理液和前置液用量、泵注参数和程序的优化；压裂工艺参数优化(以提高地层天然裂缝和主裂缝导流能力为目标，优化各种支撑剂类型、浓度、用量和程序，以及加入方式等；优化合理的施工参数)。

Yet at least we can admire the wise Prearrangement which has ordained that, as they have no hopes, so they shall have no memory to recall, and no forethought to anticipate, the miseries and humiliations which are at once a necessity of their existence and the basis of the constitution of Flatland.

但至少我们可以欣赏明智的各项前置已注定的，因为他们没有希望，所以他们不得有内存回收，没有深谋远虑预测，苦难和屈辱的一次是在其存在和必要性基础的平地宪法。

In order to overcome this effect, a preconditioning circuit is introduced.

为克服这个效应，设计了实用的前置电路。

Students try to find some rules about the Past Participle as the Attribute and Predicative.

单个的过去分词作定语时一般兼有被动和完成的意义，常作前置定语。

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。