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quadrupling loss四倍损失quadrant warhead扇形弹头quadrangular jar方壶quadrature phase正交(相)位移, 90°相位移quadrate algebra方代数quadrate culvert方涵quadrature rules求积公式quadricorrelatorn.自动调节相位线路quadriphase loop四相环quadrature mixer正交混频器