2 文書を見つけるための辞書。

• solidity, solidness
• 硬質, 固体性, 堅牢さ, 堅さ, 硬さ, 固さ
• the consistency of a solid
• 固体の堅さ

• hardness
• 硬さ
• a quality of water that contains dissolved mineral salts that prevent soap from lathering; "the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present"
• 石鹸が泡立つのを防ぐ溶解ミネラル塩を含む水質