Retinal artery occlusion occurs when the retinal artery (or one of its branches) becomes blocked. This results in the blood and nutrient supply to the nerve layer of the retina being cut off. This leads to permanent damage and is a common cause of sudden loss of vision in one eye.
Quench is defined as to satisfy or to extinguish. An example of to quench is to have a cold drink when thirsty. An example of to quench is to put out a fire.
Quench C hardening is a mechanical process in which steel and cast iron alloys are strengthened and hardened. These metals consist of ferrous metals and alloys. This is done by heating the material to a certain temperature, depending on the material.uench metals is a progression; the first step is heating, i.e. heating it to the required temperature. Second step is soaking. Soaking can be done by air (air furnace), or a bath or in a vacuum. The soaking time in air furnaces should be 1 to 2 minutes for each millimeter of cross-section.