Intermediate and mafic volcanic rock
Duofuton Na-rich mafic volcanics
ACOUSTIC EMISSION OF ROCK
ACOUSTIC EMISSION IN ROCK MASS
acidic-intermediate intrusive rock
acidic cor rosion and filtration of rock mass
acid rock plate crevice image
acid rock drainage ARD
矿山酸性排放
全自动的区分计算机和人的图灵测试(CAPTCHA)
生物医学工程与器械操作部
酸性矿山排水
accumulation of rock mass