microgram

Microgram for microgram, beryllium is one of the most toxic elements on the periodic table.

一微，又是一微，铍是周期表上最有毒的元素之一。

The Nestle gold medal grows 3+ powdered milk iodine content into each hectogram including 191 micrograms to 198 micrograms, surpasses the national standards seriously the upper limit.

雀巢金牌成长3+奶粉的碘含量为含191微至198微，严重超过国家标准的上限。