一、概述 1、前言: 为了适用备战和消除水银对环境的污染,实现检测自动化和能连续地兼顾一组压缩式真空计的检定范围,中国计量科学研究院、北京仪器厂和天津市计量所,组成了两个“三结合”研制组,采用静态膨胀法,共同研制金属膨胀真空检定系统(见外观图)。 在国内已经研制成了 I. INTRODUCTION 1. Foreword: In order to apply for the preparation and elimination of mercury pollution to the environment, to achieve test automation and to continuously take into account the test range of a set of compression type vacuum gauges, China Institute of Metrology, Beijing Instrument Factory and Tianjin Metrology , Composed of two “triple combination” development group, the use of static expansion method, joint development of metal expansion vacuum verification system (see appearance). Has been developed in China