单词	kelly bar
释义	kelly bar 方钻杆,凯氏方钻杆
随便看	Photographg photograph gallery photograph grouping photographic photo-graphic photographica photographic absolute magnitude photographic absorption coefficient photographic accessory photographic accuracy photographic adapter photographic advertisements photographic aerial camera photographic aircraft photographic airplane photographic astrospectroscopy Photographic atlas of practical anatomy photographical photographicalally photographical arrangement micrometer photographical art photographic albedo photographical clinometer photographical contrast photographical identification