四月二十二日至二十五日在二一二厂召开了“腐蚀刻线法控制量规磨损极限经验交流会”。会议是在反击右倾翻案风取得伟大胜利的形势下召开的。参加会议的工人占代表的70％,体现了工人为主体、工人是科研的主力军。会上工人登上批判讲台,用亲身体会批判 From April 22nd to 25th, at the 221th factory, the “Experience Meeting on Control of Wear Limits of Corrosion Etching Method” was held. The meeting was convened in the context of counterattacking the right-wing case and making great triumphs. Workers participating in the conference accounted for 70% of the representatives, reflecting workers as the main body and workers as the main force for scientific research. During the meeting, the workers boarded the critical podium and criticized them personally.