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重庆煤矿设计研究院和西安煤矿设计研究院共同研制成功的MT-3A型载荷试验机,经鉴定已达到国内先进水平并荣获四川省人
Chongqing Coal Mine Design and Research Institute and Xi’an Coal Mine Design and Research Institute jointly developed a successful MT-3A-type load testing machine, the identification has reached the advanced level and won the Sichuan Province