出自 DDCC Documentation
This is functional when the input file is a .msh file generated by gmesh . List the surface numbers in the Gmesh file. The parameters setting is related to each surface in sequence.
$gmshlineboundary n line_number type line_number type line_number type
line_number : The line number where to put the contact. type : The corresponding contact type. 21 gate contact. 3 source contact. 4 drain contact.
$gmshlineboundary 6 35 21 36 21 37 21