特征: characteristic; trait; featu ...线: thread; string; wire素: white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特征线系: set of characteristics证券特征线: scl security characteristic line左伸特征线: left-running characteristic曲面族特征线: characteristic of a family of surface全特征线理论: full characteristic theory特征线法求解: method-of-characteristics solution可展曲面的特征线: characteristic of a developable特性曲线特征线: characteristic curve元素光谱特征线条: raies ultimes线素: line element保形线素: conformal arc element结合胆线素: conjugated bilirubin奇异线素: singular line element丝裂线素: mitochromine线素并集: union of linear element线素几何学: line geometry线素向量: line element vector
