6月20日，首届兰州青少年科技嘉年华在甘肃国际会展中心开幕。 每日甘肃网6月20日讯 (记者 耿宁 文/图) 今天上午，首届兰州青少年科技嘉年华在甘肃国际会展中心开幕。记者看到，在上万平方米的展厅...
HD Photo 1st Lanzhou Youth Science and technology carnival, the first Maryland teenager technology Carnival in Gansu International Convention and exhibition center opening. Gansu daily network (reporter Geng Ning text / chart) this morning, the first Lanzhou Youth Science and technology Carnival in Gansu International Convention and Exhibition center. Reporters saw in the exhibition hall of the tens of thousands of square meters...
