雷神公司提供的设计文档表明，AIM-120的电子系统采用了“功能最小化”设计原则：制导模块仅由37颗主要芯片构成，而现代导弹通常需要数百颗BGA封装芯片。通过这种简化设计，单点故障率减少了62%。美国空军2018年发布的《电子战适应性评估报告》指出， ...

美国 AIM-120先进中程 空空导弹 ...

(ECNS) — "I'm so happy to be in Beijing!" exclaimed six schoolchildren from Hetian, Xinjiang, who traveled thousands of kilometers from the foot of the Kunlun Mountains to China's capital to celebrate ...

NEW DELHI, June 4 (Xinhua) -- At least 11 people were killed and 50 others injured Wednesday in a stampede outside a cricket stadium in the southern Indian city of Bengaluru, multiple local media ...

BEIJING, May 28 (Xinhua) -- In celebration of International Children's Day, which falls on June 1, the Shenzhou-20 crew aboard China's space station has sent holiday greetings to children across the ...

作者哥伯播义从在宁波、在浙江的生活经历与所见出发，描写晚清浙东地区的市井百态。每介绍一个行当之前，都以一张宁波画家的速写为引，以画引文、以文释画，图文并茂，承续了中国“左图右史”的叙事传统。