asphalt melting system  全球导航卫星系统; 沥青熔化系统

Electric heating snow-melting system  电热融雪系统

Electric heating switch snow-melting system  电加热道岔融雪系统

Electrical-heating Snow-melting System for Switch  电加热道岔融雪系统

Localized Melting System  局部熔融体系

Snow melting system with electric heating  电加热融雪系统

soft melting system  软熔系统

thermal snow-melting system  热力融雪

Melting and Holding System  熔化保温系统

Melting blend system  熔融体系

Railroad switch snow-melting monitor system  道岔融雪监控系统

System System Software  系统软件

positive list system system  肯定列表制度

inter-backup system for central control system and district-level dispatch system  集控与地调互备系统

Single school system; Single track system; Unitary school system  单轨制

Single track system; Single school system; Unitary school system  单轨制

Unitary school system; Single school system; Single track system  单轨制

7-year system switching to 8-year system  7转8学制

Accounting environment Accounting theoretical system Accounting standards system  广义能量动量张量