nebulan.[天]星云;[医]角膜云翳
nebular variable星云变星
nebular spectrum星云光谱
nebula diagnosis察翳法
nebula of cornea角膜云翳
nebula frontalis额骨内板增生
nebular red shift星云红移
nebular hypothesisn.[天]星云假说
nebular transitions星云跃迁
nebula epinephrinae肾上腺素喷雾(剂)
nebular spectrograph星云摄谱仪