英语翻译Heat meters in general are constructed to withstand vari

英语翻译
Heat meters in general are constructed to withstand variations in the chemical constituents and the acidity or
alkalinity of the heat conveying liquid.However,the presence of solids in suspension and their deposition onto
the surfaces of the passages of the heat meter or their effect on the moving parts of a mechanical flow sensor
causes degradation of the performance with time.