highway development track  公路发展轨迹

Department of Land Development Development ＆ Surveying and Mapping  桂林工学院国土开发与测绘系

engineering district；maintenance of way section；track division；track district；track maintenance division  工务段

Public development andprivate development  公共开发与非公共开发

scientific and technological enterprises that integrate scientific and technological development with industrial and trade development  技工贸结合的科技型企业

Social Development Department of Development Research Center of the State Council  国务院发展研究中心社会发展部

the development of development  发展

China Recycling Development Corporation Development Divison  商业部中国再生资源开发公司开发业务部

retrogressive development regressive development  退化生长; 退化发育

jointless line；continuously welded rail track；jointless track  无缝线路

non-NTDS track {dummy track}  非开战术系统资料追瞄

replacing and laying track with track panel  轨排换铺

track to track fusion  航迹融合

track-to-track association  航迹关联

track-to-track fusion  航迹融合

track-to-track moving time  轨至轨移动时间

transforming single track into double track  单改双线

double - track existing single track line  增建二线

going-out development  高技艺