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为了提高矿山开采自动化水平,根据生产需要,我院研制了CJ-1型数字式炮孔测角仪(见图1),主要用来测量验收炮孔倾角。本仪
In order to improve the level of automation of mining, according to the production needs, our hospital has developed a CJ-1 digital gun goniometer (see Figure 1), mainly used to measure the acceptance hole angle. This instrument