单词	course signature system
释义	course signature system 实验签到
随便看	subsidence flows subsidence forecast subsidence fracture subsidence gradient subsidence history subsidence history simulation subsidence induced by mining subsidence inversion subsidence inversion aloft Subsidence land subsidence lands of coal extraction Subsidence law subsidence measurement subsidence mining subsidence mode subsidence model subsidence monitor subsidence monitoring subsidence monitoring and measurement subsidence monitoring network subsidence monitoring points subsidence obsergational technique subsidence observance subsidence observation subsidence observations