【科普实验】温度计的使用

You need a UEI number before you can apply for government contracts. A UEI number is the authoritat

LRA testing with UEI DL479T meter

You need a UEI number before you can apply for government contracts. A UEI number is the authoritative identification number provided by the U.S. government, used to identify businesses awarded federal grants, awards and contracts. It replaces the DUNS number and allows entities to obtain an authorized identifier directly from the System for Award Management (SAM) rather than through a third party. All of the federal government's Integrated Award Environment (IAE) systems now use UEI numbers ins

说物理也讲历史 - 温度计的发展历程