We use the principle of lock - in amplifier to amplify the weak singal and send it to A/ D conversion properly.
为将接收二极管上的微弱信号送到A／D转换器处理，采用锁定放大原理设计接收信号的调理电路。
This paper presents a topological technique for the sensitivity calculation by means of singal flow graphs theory.
本文提出用信号流图理论求灵敏度的一种拓扑方法。
On this basis, correlation analysis, singal-parameter analysis and double-parameter analysis are fulfilled. And through this, the characteristic parameters are decided.
在此基础上，对车型数据进行了相关性分析、单参数分析和双参数分析，确定了车型分类的特征参数。
The frequency synthesizer is a kind of discrete frequency singal generator with high stability, and it is widely used in communication, radar, apparatus and navigation system.
频率合成器是一种频率稳定度较高的离散间隔型频率信号发生器，广泛应用在通信、雷达、仪器仪表及导航系统中。
In this paper, we introduce the principle of metallographical cutter control system and the design method of software and hardware based on the AT89S52 singal-chip microcomputer.
介绍了以AT 89s52单片机为核心的金相切割机控制系统原理和软硬件设计方法。
The information of bioinformatics and phylogenetic analyse will be significant to investigate the resistance mechanism and the networks consisted of singal transduction pathways.
利用生物信息学及系统发育分析可以为非寄主抗病机制及信号转导调控网络提供有用信息。
Using the characteristics of pulse echo singal during the probe adjustment, a relation model between angle of incidence and time-domain eigenvalue of reflect wave signals was proposed.
分析了探头调整时脉冲回波信号的变化特点，在实验的基础上构建了声束入射角与表面波时域特征值间的关系模型。
In this paper, the large-singal analysis and small-signal analysis are made on an 8 mm 4th harmonic mixer. This harmonic mixer using a microstrip configuration is developed with GaAs diodes.
本文对8毫米4次谐波混频器进行了大信号分析和小信号分析，并设计制作了一个微带结构的8毫米4次谐波混频器。
This paper gives a method that takes the 8031 type singal -chip computer as central processor to control the process of the fast data acquisition and data processing for high frequentcyy signals.
本文介绍了一种采用8031单片机作中央处理器，实现对高频信号的快速数据采集过程的控制，并能对所采集的数据进行处理。
The singal transient feature detection represent method, and a transient energy evaluation method are used based on the reassigned scalogram for the vibration non-stationary feature representation.
提出基于小波尺度图重分配的信号瞬态特征检测方法和瞬时能量估计方法，并应用于轴承在多种轻微故障状况下的振动非平稳特征的检测与表示。
The paper presents the Intelligent weighing Indicator formed by 8031 Singal-chip Microcomputer. It has the functions of weighing, displaying, computing price, printing, storing and adding up.
本文介绍用8031单片微型计算机构成的智能称重指示器，它具有称重、显示、计价、打印、贮存和统计等功能。
The paper presents the Intelligent weighing Indicator formed by 8031 Singal-chip Microcomputer. It has the functions of weighing, displaying, computing price, printing, storing and adding up.
本文介绍用8031单片微型计算机构成的智能称重指示器，它具有称重、显示、计价、打印、贮存和统计等功能。
应用推荐