Tanker tonnage identified, conception of engine horsepower size, best matched with tank tonnage, carrying big, small engine, oil transport vehicle back force.
罐车吨位确定了，就要构思发动机的马力大小，最好跟油罐吨位匹配了，承载大了，发动机小，油品运输车辆背力。
Auto industry: steel ring, vehicle body, chasis, axle housing, oil tank, door, etc. C.
汽车行业：钢圈、车身、油箱、桥壳、底盘、车门等零件。
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