- red hardness
赤熱かたさ[機械]
- hardness: hardness n. 苦難; 硬度.【動詞＋】endure hardness as a good soldier立派な軍人らしく苦難に堪える.【形容詞 名詞＋】metallic substances of near-diamond hardnessダイヤモンド並みの硬度をもつ金属物質.【前置詞＋】He often complained of the hardness of life.よく人生
- abrasion hardness: 《機械》摩耗｛まもう｝かたさ◆すべりの際の耐摩耗
- apparent hardness: 見掛け硬さ｛みかけ かたさ｝
