About AOKI TAKUYA
About 北大 大学院工学研究科
About IGARASHI TOSHIFUMI
About 北大 大学院工学研究科
About IIO YOSHIHIRO
About スズキ
About alkaline waste water
About underground drainage
About self purification
About carbon dioxide
About neutralization
About calcite
About liquid waste
About self-purification
About neutralization
About Tunnel maintenance and incidental equipment,and others
About Water pollution in general
About アルカリ性
About トンネル
About 排水
About 性状
About 自然浄化作用
About 中和
About 過程