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A leaf blower, commonly known as a blower, is a device that propels air out of a nozzle to move debris such as leaves and grass cuttings. Leaf blowers are powered by electric or gasoline motors . Gasoline models have traditionally been two-stroke engines , but four-stroke engines were recently introduced to partially address air pollution concerns.
Fuels burn faster and more efficiently when they present a large surface area to the oxygen in air. Liquid fuels must be atomized to create a fuel-air mixture, traditionally this was done with a carburetor in petrol engines and with fuel injection in diesel engines. Most modern petrol engines now use fuel injection too — though the technology ...
A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4] The primary method of adding fuel to the intake air is through the Venturi effect or Bernoulli's principle in the main metering circuit, though various other ...
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HASL or HAL (for hot air (solder) leveling) is a type of finish used on printed circuit boards (PCBs).. The PCB is typically dipped into a bath of molten solder so that all exposed copper surfaces are covered by solder.
After over 100 people were killed in a South Korea plane accident, here are the worst accidents and crashes in aviation history.