异重流沉积bed: n. 1.床,床铺;床位,铺;(动物的)窝;〔比喻〕安乐 ...beds: 密蜡蜡alternating beds: 互层alternation of beds: 交互层; 料层交替; 岩层交互变化antidecubitus beds: 防褥疮床下载手机词典可随时随地查词查翻译