日期:
来源:雅诚德英语网
The indispensability and principle of the automatic classification humping yard system is introduced in this paper.
本文介绍了编组驼峰自动化系统的必要性和工作原理。
The indispensability and principle of the automatic classification humping yard system is introduced in this paper.
本文介绍了编组驼峰自动化系统的必要性和工作原理。