automatic expansion valve
71lighthouse — /luyt hows /, n., pl. lighthouses / how ziz/. 1. a tower or other structure displaying or flashing a very bright light for the guidance of ships in avoiding dangerous areas, in following certain routes, etc. 2. either of two cylindrical metal… …
72Railways in Melbourne — Melbourne rail network  City Loop  Caulfield group  Frankston line  Pakenham line  Sandringham line  Cranbourne line …
73Diving watch — Omega Seamaster model 2220.80, with a water resistance of 300 m (1,000 ft). The second crown (at 10 o clock) is a helium release valve. A diving watch is a watch designed for underwater diving that features, as a minimum, a water… …
74Doing It Right — DIR diver Doing It Right (DIR) is a holistic approach to scuba diving. According to the DIR approach fundamental skills, teamwork, environmental awareness, and the use of a highly optimized/streamlined (i.e. minimalistic) equipment configuration… …
75Transmission (mechanics) — Gearbox redirects here. For the video game developer, see Gearbox Software. 5 speed gearbox + reverse, the 1600 Volkswagen Golf (2009). A machine consists of a power source and a power transmission system, which provides controlled application of …
76Mechanical ventilation — In architecture and climate control, mechanical or forced ventilation is the use of powered equipment, e.g. fans and blowers, to move air  see ventilation (architecture). Mechanical ventilation Intervention …
77Space Shuttle main engine — SSME redirect here. For the services field, see Service Science, Management and Engineering infobox rocket engine imsize=250 caption=Space Shuttle Main Engine test firing name=Space Shuttle Main Engine country of origin=United States manufacturer …
78List of problems solved by MacGyver — This is a list of problems that have been solved by the fictional character MacGyver from the television series of the same name. (This list is not yet comprehensive.) MacGyver employs his resourcefulness and his knowledge of chemistry,… …
79Coffeemaker — Coffeepot redirects here. For the populated place in Gila County, Arizona, United States, see Coffeepot, Arizona. Coffeemakers at the Wikimedia Foundation office Coffeemakers or coffee machines are cooking appliances used to brew coffee without… …
80Diesel particulate filter — A diesel particulate filter (top left) in a Peugeot Off road DPF Installa …
