asphalt-tar pitch 中文意思是什麼
asphalt-tar pitch
解釋
硬焦油瀝青-
Bitumens for building and civil engineering - specification for mixtures of bitumen with pitch, tar and trinidad lake asphalt
建築與土木工程用瀝青.第3部分:瀝青與硬瀝青焦油和特立尼達湖地瀝青混合料規范
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