Assertion: circuit breaker's contact | /r/AtLocation | opposite direction
Facets:
Source sentences:
text: sorry for my bad english, the meaning is as flows : if one contact (of a 245 kV breaker) moves you ned a speed of 8 m/s, if both contacts move in opposite direction, each needs a speed of 4 m/s (halved) in order to have the same relative speed of 8 m/s.