继电器还需要具有卓越的“触点-线圈”屏蔽效应。
The relays should also have excellent contact-to-coil shielding action.
保护通常是通过屏蔽继电器实现的，并且布线在印制板上。
The guard is usually implemented with shielded relays and traces on a printed circuit board.
正确地选择和屏蔽继电器可将这种影响降低到可接受的水平。
Proper selection and shielding of the relays has reduced this to acceptable levels.
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