备用车辆的数量可控制在运用车辆数的10左右
The number of backup vehicles can be controlled at around 10% of the number of vehicles in use.
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The number of backup vehicles can be controlled at around 10% of the number of vehicles in use.
原文地址: http://www.cveoy.top/t/topic/g8Lt 著作权归作者所有。请勿转载和采集!