diameter 名词复数:diameters 词形变化: 形容词: diametral | 同义词: width | thickness | breadth | length | distance | span | calibre | inside diameter | inside | diameter | diam | 反义词: radius | 词义辨析: 同义: n.直径 breadth width thickness inside diameter calibre 反义: n.直径; 倍 radius