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两种方式:
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ground# ~% r% ?* U3 c, ?! b
signal
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signal1 ]) ~2 q- ?0 \' ^6 o
power, T& j, g$ P2 F/ q
singal
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4 h N+ }" G% h+ [# rsignal
: ]( D5 B4 |) E9 epower) f3 h' a# a+ z3 D
signal
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signal" q# G$ L4 ]) ^& c5 e$ g
ground. s, Y1 z1 A8 A0 S: M) L9 L
singal |
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