成吉思汗
Chinese Long March-8A rocket launches new internet satellites_我的网站
A | (ECNS) -- China successfully sent a new batch of internet satellites into orbit on Tuesday from the Hainan commercial spacecraft launch site in Wenchang, south China's Hainan Province, according to China Aerospace Science and Technology Corporation (CASC). The satellites, the 23rd group of the low-orbit internet constellation, lifted off aboard a Long March-8A carrier rocket at 4:52 p.m. Beijing Time, marking a complete mission success. Developed by the CASC, the two-stage semi-liquid-fuel rocket completed its first full-system verification flight after a full performance upgrade. It features a new direct-orbit deployment that drastically cuts the time satellites need to reach their working positions. The launch marks the 661st flight of the Long March rocket family. The newly deployed satellite network batch was also developed by China Academy of Space Technology, and will support China’s growing low-earth orbit internet constellation. (By Intern Lin Qiaochu, Zhang Dongfang) 
。 8月17日生意社菜籽油市场基差为330元/吨。 8月17日菜籽油期货主力合约2611收盘价为10428元/吨。 8月17日生意社现货基准价为10758元/吨。
B | 市场基差=现货价格-期货价格=10758-10428=330元/吨。【期货通核心原理】现货价格决定期货价格，期货价格影响现货价格；基差=现货价-期货价，基差的区间波动属性强于价格，且基差与价格一般情况下呈相反方向运行，因此基差在周期高位(预计会走低)，则可以做多价格，基差在周期低位(预计会走高)，则可以做空价格。
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