About UCHIDA YOHEI
About 産業技術総合研 地質調査総合セ
About KATSURAGI MASAHIKO
About 日本地下水開発
About 地下水学会誌
About geothermal energy
About heat exchanger
About curved pipe
About heat pump
About snow removing work
About snowmelt
About equipment
About U-pipe
About sprinkler snow melting
About earth thermal heat pump
About cooling and heating system
About Geothermal energy
About 地下熱