对国产首台ac4000交流传动干线电力机车试验中暴露出的几个技术问题及其原因进行了初步的分析与探讨。

Analysis and discussions are made on certain technical problems occurring during the test of AC4000, the first ac drive main line electric locomotive as well as the causes thereof.

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介绍了新开发的日本新干线高速转向架的结构，以及对该转向架进行的主要性能试验。

Described is the structure of the high speed bogie lately developed for Shinkansen in Japan, and the main performance test made for the bogie.

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