一机部四局于去年9月——11月間,召开了第二届全国天平质量測試評比会議。参加这次評比的产品,有全国各地5个生产厂成批生产的十个品种的天平。这次測試評比的条例和标准都比63年第 A machine four innings last September - November, held the second session of the national balance quality test evaluation meeting. To participate in the appraisal of the products, all over the country five production plants batch production of ten varieties of balance. The test rules and standards than the first 63 years