释义 |
temporary hardness
temporary hardness n (Chemistry) chem hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling temporary hardness
temporary hardness[′tem·pə‚rer·ē ′härd·nəs] (chemistry) The portion of the total hardness of water that can be removed by boiling whereby the soluble calcium and magnesium bicarbonate are precipitated as insoluble carbonates. |