参加比赛 GND

GND

GND

GND

gnd

gnd

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND

RGND+GND

RGND+GND