cross-staff

短语

n. 直角器, 一种测量距离的仪器

词形变化

cross-staffs 复数 cross-staffs cross-staves cross-staves 复数

别名

crossstaff

释义与例句

n.
  1. 1.

    An archbishop's cross.

    废旧 宗教
  2. 2.

    An early instrument, consisting of a wooden rod with a sliding crosspiece, used for measuring the altitude of a star or for surveying.

    历史