micron
微米,微量级,微粒,微米级
Definitions
- 1
plural mi·crons, mi·cra [mahy-kruh]. /ˈmaɪ krə/.
- : Also called micrometer. the millionth part of a meter. Symbol: μ, mu
- : Physical Chemistry. a colloidal particle whose diameter is between 0.2 and 10 microns.
- : Physics. a very small unit of pressure, equal to that exerted by a column of mercury 1μ high.
Examples
The tattoo ink contains a UV-activated dye inside of a plastic nanocapsule less than a micron in diameter – or thousandth of a millimeter – about the same size as an ordinary tattoo pigment.
By one estimate, there are a hundred million bits of debris that are a millimeter in size, a hundred trillion as small as a micron.
Most of the particles generated by burning wood are smaller than one micron—a size believed to be most damaging to our lungs.
Their size is measured by the unit used in the microscope, called the micron, which is about 1⁄25000 of one inch.
The man who studies bacteria measures by the micron, 25,000 of which go to the inch.
This unit is the one-thousandth part of a millimeter and is called the micro-millimeter or micron.
For a moment they saw with a spectrum that reached from the star-wide waves of novas to the micro-micron skittering of neutrinos.
But with the destruction of the planet an almost certainty, the collective nervous system was just one micron away from explosion.