underbed

底板, 底盘, 底架, 底座, 基础板

发音

US

词形变化

underbeds 复数 underbeds

释义与例句

n.
  1. 1.

    An underlying base that supports a bed or foundation.

    It has an underbed of slate and a cover of hard shales which contains seams of sandstone and form a bluff.

词源

From under- + bed.

来源：wiktionary