单词 Frasnian 释义 Frasnian, a. Geol.|frznn|Formerly also -ien.[ad. F. Frasnien (J. Gosselet 1879, in Ann. Soc. gol. du Nord VI. 396), f. Frasne, var. Frasnes, name of a village and commune in southern Belgium.]Name of the lower of the two stages constit...