… - Electronic calculators capable of operation without an external source of electric power and pocket-size data … operations and several other types of calculations (e.g., extract square roots, raise a number to a given power and …
… are reaction engines in which combustion is independent of external air supply, the charge comprising both fuel and the … (C) PNEUMATIC POWER ENGINES AND MOTORS These engines use an external source of compressed air (or other gases) and, in …
