严寒地区CRTSⅠ型板式无砟轨道SL-1-40B型充填层砂浆施工质量控制
엄한지구CRTSⅠ형판식무사궤도SL-1-40B형충전층사장시공질량공제
Construction Quality Control of SL-1-40B Filling Layer Mortar for CRTS I Slab Ballastless Track in Cold Area