protractors是什么意思？

protractors

• n. 量角器，分度规( protractor的名词复数 )；

例句

• After installing the protractors , check the assembly for squareness prior to using the machine. 按完量脚器后, 请在使用前仔细检查各个部件的按装.

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  量角器；分度规
  A protractor is a flat, semi-circular piece of plastic or metal which is used for measuring angles.