walkern.步行者；行人；助步车Walker's impression tray表示属性Walker-Clodius syndrome瓦-克二氏综合征:虾钳样手足畸形, 并指(趾)畸形, 弓形腭, 鼻泪管阻塞, 两眼距离过远等walker-assisted walking步行器助行Walker-Warburg syndrome沃-瓦二氏综合征walker mobile suction unit手推车式吸引器Walker's bladder retractor表示维数Walker's Invasion of Mexico对策的表示Walker's carcinosarcoma cell[计] 符号表示Walker Group Holdings Limited表象的二元论Walker's Invasion of Nicaragua队列的表示法