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一种适合煤矿井下地质摄影的照明工具——KSH型防爆万次闪光灯已经由煤炭科学院常州自动化研究所和常州第四无线电厂试制成功。它采用铝合金结构,用4
A suitable underground mine geological photography lighting tools - KSH-type explosion-proof million flash has been trialled by Changzhou Institute of Automation Coal and Changzhou No. 4 Radio Factory trial success. It uses aluminum alloy structure, with 4