欧路词典|英汉-汉英词典 小火车是什么意思

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示测速、材料探测、噪声检测、超声测距、道称重秤、光电计次等等。