... direct variation 正变(分) directed angle 有向角 directed line 有向直线 ...
基于2个网页-相关网页
multivalued directed angle 多值有向角
directed relative angle 有向相对角
directed trihedral angle 有向三面角
negatively directed spherical angle 负向球面角
oppositely directed trihedral angle 反向三面角
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