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協力鋼 (きょうりょくこう) — high-tension steel
協力鋼
high-tension steel
協力 きょうりょく
cooperation; collaboration; help; support
協力日 きょうりょくび
day on which a nursery school requests the cooperation of parents to keep their children at home
協力者 きょうりょくしゃ
collaborator; cooperator; coworker; ally
ご協力 ごきょうりょく
協力関係 きょうりょくかんけい
cooperative relation; cooperative relationship; collaborative relationships; cooperative structure; cooperative ties; cooperative alliance; partnership; close ties; hookup