瑙曼补充称，尽管销售新车的利润率较低，但随着上路汽车日渐老化，对利润率较高的服务及维修工作的需求将得到提升，经销商的盈利能力也会激增。
While selling new cars is a low-margin business, he adds, dealers' profitability will shoot up as those on the road age, boosting demand for higher-margin service and repair work.
分析师们说，IBM业绩好转反映出该公司已经改变了业务模式，从服务方面实现更高的利润率，同时通过庞大的销售团队出售利润率更高的软件产品。
Analysts said IBM's earnings improvement reflects the way it has changed its business to get better margins from services and sell more high-margin software products through its huge sales force. Mr.
结果表明：单店销售额和零售服务水平对毛利润率的偏效应显著为正，产业集中度对毛利润率的影响不显著。
The results show that service level has positive and significant influence on firms margin, industry concentration ration hasn't significant influence on margin.
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