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NEXt Generation RADar. A NWS network of about 140 Doppler radars operating nationwide.
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AMMONIA (Anhydrous). Gas usually carried by LPG tankers at about -50 deg.c. Lighter than air, it is easily escaping from any openning and be highly dangerous to inhale in great uantity. Reacting violently with water. All degrees centigrade: Boiling point: ...
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Nautical Institute. Organization founded in 1971 located in London which promotes high professional standards among deck officers.
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"NiCd" refers to a battery that contains nickel cadmium as its chemical base; other abbreviations include "NiCad" and "Nicad." It is the first type of portable rechargeable battery produced and is still widely in use in power tools and cameras. ...
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"NIMH" refers to nickel metal hydride; it's an updated and better version of a NiCd battery. It has more power and doesn't need to be fully discharged regularly, unlike a NiCd battery. It operates well in digital cameras, motorized children's toys and cor ...
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A remote indicator for wind speed and direction used in conjunction with a contact anemometer and a wind vane. The indicator consists of a center light, connected to the contact anemometer, surrounded by eight equally spaced lights which are individually ...
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Introducing nitrogen into the surface layer of a solid ferrous alloy by holding at a suitable temperature (below Ac1 for ferritic steels) in contact with a nitrogenous material, usually ammonia or molten cyanide of appropriate composition. Quenching is no ...