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four vector
tech. 四元向量; 四元矢量
four-vector [ˌfɔː'vεktə, ˌfɔːr'vεktər]
gen. 四元〔四维〕矢量
avia. 四维向量
space 四维矢量
four vector
: 3 phrases in 1 subject
Technology3

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