1)quality car,质量优良的小客车2)rate of qualified service,质量优良率3)B, first-ratebadjiexcellent; of the best quality,第一流的;优良的;质量最佳的4)Passenger Car Unit , PCU,小客车当量数5)quality of automobile passenger transport,汽车客运质量6)Yongliang 15" wheat,"永良15号"优质小麦
用法例句
Studies on the mathematical model of optimum plantation of "Yongliang 15" wheat.;