单词	null vector
释义	null vector 零向量
随便看	velocity eontrol velocity equation velocity equation for sliding along subface velocity equation for sliding along top surface velocity equivalent velocity equivalent diameter velocity error velocity error coefficient velocity error compensator velocity error constant velocity-error constant velocity error correction velocity-estimated function velocity estimation velocity estimation model velocity estimator velocity evolvement velocity excess velocity exploration velocity extraction unit velocity factor velocity factorVF velocity factorVF,vf velocity factorVF, vf Velocity False Target