Last Updated：2025/11/21
Sentence
Quizzes for review
Case hardening the gears before assembly improved their wear resistance significantly.
See correct answer
Case hardening the gears before assembly improved their wear resistance significantly.
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Related words
case hardening
Verb
form-of
participle
present
Japanese Meaning
これは、動詞 'case harden' の現在分詞形（present participle）を示しています。
English - English
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