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quadrate planting方形播种quadrivalent atom四价原子quadrupole system四极系统quadrature signal正交信号quadrupole moment四极矩quadriceps artery[医] 旋股外侧动脉降支quadriceps tendon四头肌腱quadriceps strain四头肌劳损quadrupole source四极源quadrature bridge正交电桥