四机部于七月在江西省吉安市召开了声学测量仪器技术鉴定会,来自全国各地的47个单位共65名代表参加了会议。江西省四机局、井冈山地区经委派代表出席了会议。会议经过民主协商,由四机部、中国计量科学研究院等单位组成了技术鉴定委员会,委员会下设仪器测试鉴定小组、技术资料审查小组。这两个小组于会议期间对四三八○厂提交鉴定的ND1、ND2型精密 The four-machine department held a technical appraisal meeting for acoustic measuring instruments in Ji’an City, Jiangxi Province in July. A total of 65 representatives from 47 units across the country attended the meeting. Representatives of Jiangxi Province’s four-machine bureau and Jinggangshan District attended the meeting. After a democratic negotiation, the four-machine department and the China Academy of Metrology Sciences formed a technical appraisal committee. The committee has an instrument test appraisal team and a technical data review team. The ND1 and ND2 precisions submitted by the two groups to the 4380 factory during the meeting