༨ འགྲིམ་འགྲུལ་སྐབས་མེ་འཁོར་གྲང་གློག་ཅན་ (AC 1st class and AC 2nd) དང་
There are two types of surge arrester on low voltage AC systems - namely Class 1 and Class 2.
Extract concentration, Environmental science definition, Circular motion