等熵线 Traditional form: 等熵線 Pinyin (reading): děngshāngxiàn Definitions: isentropic curve (physics}) Characters: 等 - rank, grade; same, equal; to wait 熵 - entropy 线 - line, thread, wire; clue, trail Traditional characters: 等 - rank, grade; same, equal; to wait 熵 - entropy 線 - line, thread, wire; clue, trail