bimodal

形容词 bimodal:

1. of a distribution; having or occurring with two modes

bi.mod.al

adj.（形容词）
Having two distinct statistical modes.
双模态的：有两个不同统计模式的
Designed for operation on either railroads or highways. Used of vehicles.
为铁路和公路两用而设计的。用于汽车设计

【引伸】
bi.modal.ity