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Glossary
  
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Words List   (J)
   Japanese National Space Development Agency (NASDA)  
Subject: Remote Sensing
    The agency reports to the Japanese Ministry of Science and Technology. Ref: Remote Sensing Glossary Reference Information for Virtual Nebraska
 
  
   Jaw Crusher  
Subject: Resources & Reserves
    A machine for reducing the size of materials by impact or crushing between a fixed plate and an oscillating plate, or between two oscillating plates, forming a tapered jaw.


http://xmlwords.infomine.com/xmlwords.htm?term=jaw+crusher+
 
 
  
   jet maximum  
Subject: The Earth
    See jet streak.
 
 
  
   jet streak  
Subject: The Earth
    A region of high wind speed that moves through the axis of a jet stream. Also called jet maximum.
 
 
  
   jet stream   
Subject: The Earth
    Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds. The position and orientation of jet streams vary from day to day. General weather patterns (hot/cold, wet/dry) are related closely to the position, strength and orientation of the jet stream (or jet streams). A jet stream at low levels is known as a low-level jet.
 
 
  
   Jetties   
Subject: Geology
    A pair of structures extending into the ocean at the entrance to a harbor or river that are built for the purpose of protecting against storm waves and sediment deposition. Reference: Tarbouk, E.J. & F.K. Lutgens, (2006), EARTH, 8th edition, Pearson Education International.
 
 
  
   Jovian planets  
Subject: Geology
    Giant planets in the outer regions of the solar system that are characterized by great masses, low densities, and thick atmospheres consisting primarily of hydrogen and helium.Reference: Skinner B.J., S.C.Porter & J.Park (2004), DYNAMIC EARTH, 5th edition, Jon Wiley & Sons.
 
 
  
   Jurassic   
Subject: The Earth
    The second period of the Mesozoic era (213-144 million years ago), after the Triassic and before the Cretaceous.
 
 
  
 
 
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