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江西省机械工业厅于1987年12月17～18日在宜春市组织召开了由宜春风动工具厂和华中工学院共同承担的“凿岩机(内燃)气缸激光热处理”课题的鉴定会。会上,代表们听取了课题组同志作的有关报告,并认真听取了用户意见;观看了“内燃凿岩机气缸激光热处理”的实况录象;测试了有关技术数据;审查了提供鉴定的全部技术资料;现场参观YN30A型内燃凿岩机
Jiangxi Provincial Machinery Industry Department held an appraisal meeting of “laser heat treatment of rock drill (internal combustion) cylinder” jointly held by Yichun Pneumatic Tool Factory and Huazhong Polytechnic Institute in Yichun City on December 17-18, 1987. At the meeting, the deputies listened to the relevant report made by the comrades of the research group and listened attentively to the opinions of the users. They watched the live video of “laser heat treatment of the internal combustion rock drill cylinder”, tested the relevant technical data, reviewed all the technical materials for the appraisal ; Site visit YN30A internal combustion rock drill