radiometricallyˌreɪdiəʊˈmetrɪkliBNC²³⁶²¹³⁺¹ 基本例句 adv.以辐射度测量¹⁰⁰ The Lubaka tuff does not contain minerals that can be dated radiometrically— but not far below it was datable material of a different kind. 虽然路贝卡凝灰岩并不包含能通过放射性来确定年代的矿物质,但在它下面不太深的地方,另一种不同类型的岩石则是可以确定年代的。 yeeyan