| 单词 | mortar bed |
| 释义 | Definition of mortar bed in English:mortar bednoun
OriginMid 19th century; earliest use found in Joseph Gwilt (1784–1863), architect and writer. Definition of mortar bed in US English:mortar bednoun
OriginMid 19th century; earliest use found in Joseph Gwilt (1784–1863), architect and writer. |
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