| 词汇 | Portland limestone |
| 释义 | Definition of Portland limestone in English:Portland limestonenoun Geology
OriginMid 19th century; earliest use found in John Craig (fl. 1847). Definition of Portland limestone in US English:Portland limestonenoun Geology
OriginMid 19th century; earliest use found in John Craig (fl. 1847). |
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