1 the company has imported one set world advantaged test calibrator with matrix tensile stress and purchased international advanced level of continuous sinter kiln , oir press , opening blade machine , cut - off tester , cintrifugal tester and mould . they made in china . these equipment have about 41 sets . diamond circular saw blades with cool and hot pressing can be produced two million pieces per year 1引进国际先进的基体张力测试校准仪一台，购入具有国际先进水平的国内制造的连续式烧结炉油压机开刃机切割试验机离心实验机工夹量模具等41台套。生产冷热压金刚石圆锯片200万片。
Based on the theory of charge calibration and sample and reconstruction of frequency limited signal , the scheme of adopting direct digital synthesizing technology and technology of computer is put forward in the paper . the design of hardware and software is described in detail , the error of the outputs signals of the high precision charge calibrator has been analyzed in theory 文中基于电荷校准的原理及带限信号的抽样与重构理论，提出了采用直接数字合成技术与计算机技术的整体设计方案，详细讲述了硬件电路与系统软件的设计过程，并对高精度电荷校准仪输出信号的误差进行了理论分析。
The experiment result shows that the scheme is correct and feasible , and the quality of the low - cost high precision charge calibrator has exceed the level of like product both at home and abroad , which has meet the requirement of this subject . the research on high precision charge calibrator is significant and valuable 实验研究结果表明，本文提出的高精度电荷校准仪原理方案正确、可行，这种低成本的高精度电荷校准仪的性能已经超过目前国内外研制的同类产品的水平，已达到了课题的要求，它的研究具有重要的意义和实际应用价值。
