| 单词 | ridge chain |
| 释义 | Definition of ridge chain in English:ridge chainnoun
OriginMid 18th century; earliest use found in John Muller (1699–1784), mathematician and engineer. Definition of ridge chain in US English:ridge chainnoun
OriginMid 18th century; earliest use found in John Muller (1699–1784), mathematician and engineer. |
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