high-tensile steel bars 中文意思是什麼
high-tensile steel bars
解釋
高強度粗鋼筋-
Specification for hot rolled and hot rolled and processed high tensile alloy steel bars for the prestressing of concrete
混凝土預加應力用熱軋和熱軋並處理的高抗拉強度的合金鋼筋規范
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