Warning: file_put_contents(): Only 0 of 5270 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 improvement in railway technology是什么意思，improvement in railway technology的翻译，improvement in railway technology音标、读音、用法和例句_沉淀汉英词典
In the field of railway construction in China, innovation and improvement in technology are always the top of the priorities. 在我國鉄路建設中，技術創新、技術改造的工作歷來都是國家鉄路建設的重點。