时速

我国自主设计建造的高速磁悬浮试验列车成功实现了六百公里时速的平稳试验运行。

wǒ guó zì zhǔ shè jì jiàn zào de gāo sù cí xuán fú shì yàn liè chē chéng gōng shí xiàn le liù bǎi gōng lǐ shí sù de píng wěn shì yàn yùn xíng.

The high-speed maglev test train designed and built independently in my country has successfully achieved a smooth test operation at a speed of 600 kilometers per hour.