Typically, coke-oven gas is obtained from a battery comprising a number of narrow, vertical chambers, or ovens (0.5m wide, 5m high and 12m long) built of silica brick that are separated by heating ducts, such that heat is transmitted to the coal through both sides of the chamber walls.
ISO keyboard symbol for âControlâ. In computing, a Control key is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, +); similar to the Shift key, the Control key rarely performs any function when pressed by itself.
Definition of 'key'. key. A key is a specially shaped piece of metal that you place in a lock and turn in order to open or lock a door, or to start or stop the engine of a vehicle. They put the key in the door and entered. [+ in] She reached for her coat and car keys.