串联过滤器in-line filter
基线basic line
分隔线Line Between
生殖系列germ line(Weismann 1865)germ track
样线法line-transect method
【运输】带有行选择的复写装置manifolding apparatus with means for line selection
联络线junctor【电】[专业]运输系统之间的\ntie line【交】
系统分离line isolaion; line separation