ballastless track的用法和样例：
例句
- With the Ballastless track technology extensive used, the problem of the track on solid bed damage and rectification is paid more and more attention now.
摘要随着无碴轨道技术的广泛运用，整体道床产生的病害及维修问题也越来越引起重视。 - Successful development of the crane solves the problems of high-speed railways' unballasted track laying and brings obvious economic and social benefits.
博格板大悬臂门式起重机的研制成功解决了高速铁路无碴轨道板的铺设难题，创造了明显的经济和社会效益。
