material safety data sheet, n an informational form detailing the chemical and physical properties, hazards, and ways of safely handling a toxic chemical.
BRB means be right back. It is one of the most commonly used acronyms in online chat and texting. It communicates that the person is leaving for a moment, but will be back shortly.
Page | Ù¤. Ù¡-Introduction - (MCB) A MCB is a mechanical switching device which is capable of making, carrying and breaking currents under normal circuit conditions and also. making, carrying for a specified time and automatically breaking currents. under specified abnormal circuit conditions such as those of short circuit.