On+or+in+the+water
131Water-cement ratio — is the ratio of weight of water to the weight of cement used in a concrete mix. It has an important influence on the quality of concrete produced. A lower water cement ratio leads to higher strength and durability, but may make the mix more… …
132Water treatment — describes those processes used to make water more acceptable for a desired end use. These can include use as drinking water, industrial processes, medical and many other uses. The goal of all water treatment process is to remove existing… …
