New words and phrases the plain regions in front of major mountains山前平原地☒ regions in valleys and basins among mountains山间河谷和盆地地区 accumulative subsidence累积沉降量 rebound回弹 wire flex extensometers可压缩的变形监测仪 clays粘土 loams亚粘土 lithological岩性的 Pliocene上新统的 Ground cracks地裂缝 elevation海拔 New words and phrases the plain regions in front of major mountains 山前平原地区 regions in valleys and basins among mountains山间河谷和盆地地区 accumulative subsidence 累积沉降量 rebound 回弹 wire flex extensometers 可压缩的变形监测仪 clays 粘土 loams 亚粘土 lithological 岩性的 Pliocene 上新统的 Ground cracks 地裂缝 elevation 海拔