Rb-Sr
Rubidium-strontiumRubidium-strontium.
Meaning
1 senses(uncountable)Rubidium-strontium.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable
Rubidium-strontiumRubidium-strontium.
(uncountable)Rubidium-strontium.