| 词汇 | pitch surface |
| 释义 | Definition of pitch surface in English:pitch surfacenoun Mechanics
OriginMid 19th century; earliest use found in Macquorn Rankine (1820–1872), civil engineer and physicist. Definition of pitch surface in US English:pitch surfacenoun Mechanics
OriginMid 19th century; earliest use found in Macquorn Rankine (1820–1872), civil engineer and physicist. |
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