кратность воздухообмена(Air changes per hour, or air change rate, abbreviated ACH or ac/h, is a measure of the air volume added to or removed from a space (normally a room or house) divided by the volume of the space. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced. wikipedia.orgrefusenik)
случиться может всё(anything can happen • Can you tell me what today is and what "ACH" stands for? – Today is Halloween, and I have no idea what "ACH" stands for. – No candy for partial answers. – Harper? – Anything can happen.ourboard.orgDominator_Salvator)
система ACH(An electronic funds transfer system available in the United States that facilitates the transfer of funds between receiving party and originating party bank accounts; A secure system for EFT transactions that connects all the financial institutions in the U.S)
