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1975年开始,邯郸选煤厂将Φ300×175毫米支撑橡胶弹簧用在直线振动筛上,代替金属螺旋弹簧(如图1所示)。经过试
Since 1975, Handan Coal Preparation Plant will Φ300 × 175 mm support rubber spring used in linear vibrating screen instead of metal coil spring (as shown in Figure 1). After the test