vector [i v3ktqR ]    (¼øÀ§: 14496 - ´ëÁ¹ ¼öÁØ)  
¶æ ¸í) [¼öÇÐ] º¤ÅÍ, µ¿°æ, ¹æÇâ·®
Mean A quantity, such as velocity, completely specified by a magnitude and a direction.
ÆÄ»ý¾î vectorial  ¡¼i vekt9:riql ¡½  [Çü]
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