service brake holding ability test是什么意思

用法例句

Development and application of the wireless picture transmission and control system of power testing locomotive;

动力试验车图像无线传输控制系统的开发应用

The general arrangement and the main technical parameters of the new type 200km/h heavy load dynamic testing car are describled in detail.

详细介绍了首台新型200km h高速、重载动力试验车内部总体布局和有关技术参数,同时对试验车测试装置的功能、参数进行了介绍。