单词 | principal axis |
释义 | principal axis (once / 337695 pages) n WORD FAMILY principal axis USAGE EXAMPLESThis consists of a single pair of parallel faces perpendicular to the principal axis. Various, Encyclopaedia Britannica, 11th Edit...(2012) To determine this ratio we consider its value for a vertex on the principal axis. Various, Encyclopaedia Britannica, 11th Edit...(2011) Benzoic acid is pseudo-tetragonal, the principal axis being remarkably long; there is no cleavage at right angles to this axis. Various, Encyclopaedia Britannica, 11th Edit...(2010) n a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted Syn|Hyper optic axis axis a straight line through a body or figure that satisfies certain conditions |
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