地面兵装板块12月23日跌1.67%，银河电子领跌，主力资金净流出3.61亿元

Group 1 - The ground equipment sector experienced a decline of 1.67% compared to the previous trading day, with Galaxy Electronics leading the drop [1] - On the same day, the Shanghai Composite Index closed at 3919.98, up 0.07%, while the Shenzhen Component Index closed at 13368.99, up 0.27% [1] - A detailed table of individual stock performance within the ground equipment sector is provided [1] Group 2 - In terms of capital flow, the ground equipment sector saw a net outflow of 361 million yuan from main funds, while retail investors contributed a net inflow of 381 million yuan [2] - The sector also experienced a net outflow of 2.028 million yuan from speculative funds [2] - A detailed table of capital flow for individual stocks in the ground equipment sector is included [2]