纳米是长度单位，原称“毫微米”，用nm表示，正如米是长度单位，用m表示

A nanometer is a unit of length, formerly known as "nm", is represented by nm, as is the length of the meter unit, as represented by m. 1nm equals one billionth of a meter. Commonly referred to as nano-scale means between 1-100. Nanoparticles with the naked eye and an optical microscope is generally invisible, but must be amplified several times with an electron microscope to see or even tens of thousands of times the size of the morphology of individual nanoparticles.

Nano is a unit of length, formerly known as "nanometer", expressed in nm, just as the meter is the unit of length, as in m. 1nm equals one billionth of a meter. The nano-is usually referred to as a scale of 1-100. Nanoparticles are invisible to the naked eye and general optical microscopes, and they must be magnified tens of thousands or even hundreds of thousands of times with electron microscopes to see the size of a single nanoparticle.

Nanometer is the unit of length, formerly known as "nanometer", which is expressed in nm, just as meter is the unit of length, which is expressed in M. One nm is equal to one billionth of a meter. Generally speaking, nano refers to the scale between 1-100. Nanoparticle can not be seen by naked eye and ordinary optical microscope, but it must be magnified tens of thousands or even hundreds of thousands of times by electronic microscope to see the size and morphology of single nanoparticle.<br>