He chose the GM buses because they use an automatic transmission and diesel boosters that provide power to scale inclines without strain.
他之所以选择美国通用汽车是因为他们使用的是自动转换装置和能够提供动力来测量没有张力的斜坡的柴油推进器。
Since transmission system appears typical scale economy characteristics, it owns monopoly power, therefore transmission system pricing must be regulated.
由于输电线路具有典型的规模经济效应，所以输电线路呈现垄断的经济特性，必须加以管制。
For air-conditioning water system, the transmission power ratio of the total energy consumption increases with the system scale increases.
对于空调水系统来说，输送能耗占总能耗的比例随系统规模的增大而增加。
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