In dictionaries:
two-line pass
(ice hockey) A pass across two of the three lines dividing the rink, the center red line and the two blue lines. Under some rules such a pass is illegal.
Two-line element set
A two-line element set (TLE, or more rarely 2LE) or three-line element set is a data format encoding a list of orbital elements of an Earth-orbiting object for a given point in time, the epoch.
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