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Ｍ当初鋼，Ｍ当初油，Ｍ当初材料 ＝{ｐ1×Ｄ1＋ｐ2×Ｄ2＋……＋ｐm×Ｄm}×ｋ×建設工事は • November 15th, 2022Contract Type建設工事はFiledNovember 15th, 2022
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