What does NBS-6 stand for?

NBS-6 stands for "Previous Primary Frequency Standard"

How to abbreviate "Previous Primary Frequency Standard"?

"Previous Primary Frequency Standard" can be abbreviated as NBS-6

What is the meaning of NBS-6 abbreviation?

The meaning of NBS-6 abbreviation is "Previous Primary Frequency Standard"

What does NBS-6 mean?

NBS-6 as abbreviation means "Previous Primary Frequency Standard"