理论: theory肋骨: rib; costa线: thread; string; wire周长: 6米的烟筒 a funnel six metres in ...理论肋骨线: assumed frameline曲线周长: girth水线周长: waterline girth肋骨线: costal line; frame line水准环线周长: perimeter of level cir-cuit船体肋骨线: frame-line假设肋骨线: assumed frame line肋骨线型图: frame plan肋骨线坐标: frame offset假设的肋骨线: assumed frame line骨线: epiphyseal line周长: girth; circumference; perimeter 周长约2英里的湖 a lake about two miles in circumference; 周长 6米的烟筒 a funnel six metres in girth; 圆的周长 the perimeter of a circle; 这棵树周长 6英尺。 the tree has a circumference of 6 feet 肋骨: rib; costa (pl. costae)◇肋骨切除术 costectomy; costatectomy耻骨线: lineae pectinea及骨线: interlock stitch龙骨线: keel line; keel-line锁骨线: clavicular line胸骨线: lineae sternalis; sternal line中骨线: center crease line; crease line流水线周期: pipeline cycle慢波线周期: period of slow-wave structure