About HAYASHI TAKAHIRO
About ハイドロポニックス
About polyester fiber
About medium(culture)
About cultivation
About quality characteristic
About property
About water holding capacity
About weight(gravity)
About stability
About 園芸培地
About adiabaticity
About permeability
About Agricultural machines and facilities in general
About ポリエステル繊維
About 園芸
About 培地
About 可能性