adjust a diaphragm
41Diffusion capacity — Diagnostics MeSH D011653 In biology, diffusion capacity is a measurement of the lung s ability to transfer gases. Oxygen uptake may be limited by diffusion in circumstances of low ambient oxygen or high pul …
42Audio mastering — Mastering, a form of audio post production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master); the source from which all copies will be produced (via methods… …
43Altitude diving — is scuba diving where the surface is 300 meters (1,000 feet) or more above sea level (for example, a mountain lake). [cite book |title=Encyclopedia of Recreational Diving, 3rd edition |last=Brylske |first=A. |year=2006 |publisher=PADI… …
447 World Trade Center — Infobox Skyscraper building name=7 World Trade Center The new 7 World Trade Center (view from southeast) construction period=2002–2006 use=Office location=250 Greenwich Street New York City, New York, United States roof=741 ft (226 m) floor count …
45Spirometry — TLC Total lung capacity: the volume in the lungs at maximal inflation RV Residual volume: the volume of air remaining in the lungs …
46Car seat — For the song by Blind Melon, see Car Seat (God s Presents). Driver s seat redirects here. For the 1978 single by Sniff n the Tears, see Driver s Seat. This article is about the fixed seats installed in an automobile. For seats specially designed… …
47Eyepiece — For the device for looking through a camera, see viewfinder. A collection of different types of eyepieces. An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. It is… …
48Hyperfocal distance — In optics and photography, hyperfocal distance is a distance beyond which all objects can be brought into an acceptable focus. There are two commonly used definitions of hyperfocal distance , leading to values that differ only slightly:The first… …
49Hydronics — is the name for the use of water as the heat transfer medium in heating and cooling systems. Some of the oldest and most common examples are steam and hot water radiators. In large scale commercial buildings such as high rise and campus… …
50Autogas — is the common name for liquified petroleum gas (LPG) when it is used as a fuel in internal combustion engines in vehicles. The same equipment is also used for similar engines in stationary applications such as generators.Autogas is widely used as …
