Dust and noise were main risk factors. The operating posts in dust exceeding allowed limited values were ash storehouse where put the ash and press the ash machine cab in power plant number 1.which the determination values were 5.5,1.1mg/m~3 respectively.是什么意思_Dust and noise were main risk factors. The operating posts in dust exceeding allowed limited values were ash storehouse where put the ash and press the ash machine cab in power plant number 1.which the determination values were 5.5,1.1mg/m~3 respectively.在线翻译_英语_读音_用法_例句