线反演

central line

anocutaneous line【解剖】;dentate line【解剖】;linea anocutanea【解剖】

Baillarger's line

LD P line(=log dosage probability line)

line-transect method

line jack

shielded line【电】;shielded wire【电】;shielding line【电】

on-line secured communications system【通信】