A low resistanceelectricalconnection between conducting structures such as racks and metal cable sheaths, made in order to keep them at the same potential, usually that of the earth.
导电构件间的一种低阻电连接，如机箱和金属电缆壳之间，以使其保持相同电位，通常为大地电位。
2
It introduced the methods of measuring the sensitive coefficient of the strain gauge of electricalresistance by means of equal-strength beam and the parallel connection with the measure gauge.