1 US companies are extending their leading position, with over half of the world's Top 100 listed companies coming from America. ( 2 China/HK now has the second most companies) with the UK in third place.
streamline. 1  A line that is parallel to the direction of flow of a fluid at a given instant. 2  The path of one particle in a flowing fluid. 3  A contour of a body constructed so as to offer minimum resistance to a fluid flow.
A jet stream is defined as a current of rapidly moving air that is usually several thousand miles long and wide, but is relatively thin. They are found in the upper levels of Earth's atmosphere at the tropopause - the boundary between the troposphere and stratosphere (see atmospheric layers).