| line of force | แนวแรง [ทันตแพทยศาสตร์๑๓ มี.ค. ๒๕๔๕] |
| line of force | (n) an imaginary line in a field of force; direction of the line at any point is the direction of the force at that point, Syn. field line |
| 力線 | [りきせん, rikisen] (n) line of force [Add to Longdo] |