The concentration is calculated on the volume of water that is in the well. The concentration must be at least 200 milligrams of chlorine per litre of water present in the well and must be left in the well for at least 12 hours to ensure any bacteria present are.
idles; idled; idling. Learner's definition of IDLE. 1. of an engine or vehicle: to run without being connected for doing useful work. [no object]. She left the engine idling for a few seconds before she turned it off. The cars idled in traffic.
The System Idle Process measures how much of the CPU is not being used. Comstock/Comstock/Getty Images. The System Idle Process on a computer can't cause high CPU usage because the process is a measurement of how much of the CPU's resources are free at any given moment.