microgram
微克,微量级,微格,微克级
Definitions
- 1
- : a unit of mass or weight equal to one millionth of a gram, used chiefly in microchemistry. Symbol: μg
Examples
New York’s subway system had an average fine particle concentration of 548 micrograms per cubic meter.
Gordon and his colleagues found that the PATH system had the highest levels of pollution, with an average particle concentration of 779 micrograms per cubic meter.
Once again, the PATH system had the highest average particle concentration, at 1,020 micrograms per cubic meter.
Given that the dirtiest and cleanest neighborhoods in New York City have an annual difference of about 4 micrograms per cubic meter, areas near heavy industries net a lot more deadly infections.
The United States’ standard is below that of the World Health Organization, which recommends a limit of 10 micrograms per cubic meter as an annual average.
It was balanced to a microgram—to a millionth of the combined weight of three aspirin tablets.