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黑色冶金矿业研究所在马格尼特铁矿试验了成对的—4TM型振动给矿机的底部结构,受矿峒室以面积为20～25米~2的直角棱柱体形状逐渐向上扩大。布置成对的振动给矿机和受矿峒室的底
The Black Metallurgical and Mining Research Institute tested the bottom structure of the pair of -4TM vibratory feeder in the Magnitot mine, gradually expanding upwards by the shape of a rectangular prism whose area is 20-25 m 2. Arrange the pair of vibrators to the miners and receive the bottom of the mine