Separate chain oil or bar oil is used for the lubrication of the bar and chain on all types of chain-saw. The chain oil is depleted quickly because it tends to be thrown off by chain centrifugal force, and it is soaked up by sawdust.
Electrum is a metal alloy mainly consisting of gold, silver and traces of some other metals. This naturally occurring alloy has a long history of being used for making coins, vessels and also for coatings. It was referred to as âgoldâ or âwhite goldâ by ancient Greeks.
Freebase(0.00 / 0 votes)Rate this definition: Antrum. In biology, antrum is a general term for a cavity or chamber which may have specific meaning in reference to certain organs or sites in the body. The word Antrum can also be used as a surname in certan parts of the world.