...经营环境未发生较大变化，在较长一段经营期内缴纳的税款总额不变的情况下，只是由于适用会计政策的 单一汇率法（singal method）亦称现行汇率法（currentratemethod），与多种汇率法相对。
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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。
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。
This paper describes the importance of measurement of singal polarization in radar reconnaissance devices, introduces basic parameters and measuring method of singal polarization.
论述侦收测量信号极化的重要性，并介绍信号极化的基本参数和测量方法。
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