2 文書を見つけるための辞書。

• strengthening
• 強化, 補強
• becoming stronger
• 強くなること

• strengthener, reinforcement
• 補強
• a device designed to provide additional strength; "the cardboard backing was just a strengthener"; "he used gummed reinforcements to hold the page in his notebook"
• 強さを増すために設計されたもの