macrometer的翻译，读音
英/mә'krɔmitә/
释义：
测远器, 测距仪, (光学)测距器
n. An instrument for determining the size or distance of
inaccessible objects by means of two reflectors on a common sextant.
n. An instrument for determining the size or distance of
inaccessible objects by means of two reflectors on a common sextant.