一改進的動機 夾皮溝的选鑛廠是從偽滿的一套系統中搞起來的,因之在机械设备及运用上都存在着很多缺點,以前沒有技术规程的时候,一切都是熟视无睹,没覺有什么地方不合理,所以在各部机械的运用上没有做过详细緻密的调查,仅是在操作上,使用藥剂上打圈子,雖然在现場操 An improvement of motivation Jiapigou concentrator from the puppet Manchu a set of systems out of doing so in the mechanical equipment and use there are many shortcomings in the past there is no technical rules when everything is turned a blind eye, Did not feel any place unreasonable, so the use of ministries in the machinery did not do a detailed and detailed investigation, only in the operation, the use of drugs to play circle, although at the scene