名詞 micrometer:

1. caliper for measuring small distances
   同義詞：micrometer gauge, micrometer caliper
2. a metric unit of length equal to one millionth of a meter
   同義詞：micron

micrometer

n.（名詞）
A device for measuring very small distances, objects, or angles, especially one based on the rotation of a finely threaded screw, as in relation to a microscope.
測微計，千分尺：用以測量非常小的距離，物體或角度的儀器，尤指顯微鏡上利用精細螺紋的螺桿的旋轉(zhuǎn)進行測量的儀器

micrometer
micrometer 2

n.（名詞）
A unit of length equal to one thousandth (0-3) of a millimeter or one millionth (0 -')of a meter.
微米：等于千分之一(0-3)毫米的長度單位或一米的百萬分之一(0 -')