全: complete特征: characteristic; trait; featu ...线: thread; string; wire理论: theory特征线: characteristic curve; typical line特征线，特征谱: characteristic line双特征线: bicharacteristic curve特征线法: characteristic line method; characteristic method; characteristics method; method of characteristic curves; method of characteristics特征线弧系: set of arc of characteristics特征线素: characteristic line element特征线系: set of characteristics证券特征线: scl security characteristic line左伸特征线: left-running characteristic安全特征: security features曲面族特征线: characteristic of a family of surface特征线法求解: method-of-characteristics solution外部安全特征: external safety features形曲线理论: sigmoid curve theory传输线理论: theory of transmission lines; transmission line theory; transmission-line theory等候线理论: queueing theory屈服线理论: yield line theory射线理论: ray theory升力线理论: lifting line theory天线理论: antenna theory涡线理论: line-vortex theory
