后张拉结构
post tensioned construction
后张拉预应力结构技术
Stretch-draw pre-stressed concrete
先张-后张混凝土
pre post tensioned concrete
灾后现场调查
post-earthquake field investigation
记录拉曼分光光度计
recording Raman spectrophotometer
现场拉曼光谱
in situ Raman spectroscopy
波陈面重现记录
wave-front reconstructing record