一道全英文的工程科学题Construct a hoisting apparatus (including controlling and illuminating system) at Renhua Iron Mine with I-Beams shown in Diagram 1.To move the ore out of the mine,a mining car filled with iron ore would slip from Poin
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![一道全英文的工程科学题Construct a hoisting apparatus (including controlling and illuminating system) at Renhua Iron Mine with I-Beams shown in Diagram 1.To move the ore out of the mine,a mining car filled with iron ore would slip from Poin](/uploads/image/z/5820549-69-9.jpg?t=%E4%B8%80%E9%81%93%E5%85%A8%E8%8B%B1%E6%96%87%E7%9A%84%E5%B7%A5%E7%A8%8B%E7%A7%91%E5%AD%A6%E9%A2%98Construct+a+hoisting+apparatus+%28including+controlling+and+illuminating+system%29+at+Renhua+Iron+Mine+with+I-Beams+shown+in+Diagram+1.To+move+the+ore+out+of+the+mine%2Ca+mining+car+filled+with+iron+ore+would+slip+from+Poin)
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