quadsn.四头肌quadvt.用空铅填abbr.四边形（=quadrangle)abbr.四组；四胞胎之一（=quadruplet)abbr.四声道的（=quadraphonic）abbr.四头肌（=quadriceps）abbr.空铅；铅块（=quadrat）n.四方院子；四胞胎之一；嵌条；成套的四件东西Quadric recursive二次回归quad flat package四列直插式扁平外壳,扁平外壳quadrupole effect四极效应quadratured drive正交驱动quadrophasesystemn.四相制quad-type cable四心线组电缆quadrantal points象限点quadratus plantae[医] 跖方肌quadrilinear form四线性形式,四线性型quadraturelaggingn.后移