单词 | principal plane |
释义 | Definition of principal plane in English:principal planenoun ˌprɪnsɪpl ˈpleɪn
OriginEarly 18th century. From principal + plane. Compare French plan principal. Definition of principal plane in US English:principal planenounˌprɪnsɪpl ˈpleɪn
OriginEarly 18th century. From principal + plane. Compare French plan principal. |
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