micron
micron — noun
- micronsingular
- micronsplural
1. a very small measure of length used in science and industry; one micron is one m
a very small measure of length used in science and industry; one micron is one millionth of one metre
The plastic sheet is only three microns thick, but it still blocks water.
three microns thick
Feng checked whether the air filter could catch dust below five microns.
below five microns
Under the microscope, the pollen grains looked about twenty microns wide.
Doctors can see cuts smaller than one hundred microns with this camera.
Rafael adjusted the printer because each layer was set at fifty microns.
- micrometre
the official SI name for the same unit, used especially in careful scientific writing
- micrometer
the American spelling of micrometre, though it can also mean a measuring tool in some contexts
文法句型
three microns thick
below five microns
twenty microns wide
用法筆記
Often used after a number when people describe thickness, width, or particle size. In formal SI writing, micrometre is the preferred term, but micron is still common in technical talk.