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新加坡进行数字化海事卫星通信服务 这是新加坡电信公司4月1日宣布的。其投资为1200万新元。船只、车辆、甚至个人利用小型或便携式终端,可与任何地点通信。采用数字化方式,体积比模拟方式约小一半,价格在2.5万美元左右,便宜近30%。新机器每分钟收费5.5美元,老机器收费8.75美元。 “阿里安—5”芯级发动机地面试验发生爆炸 据欧洲政府和工业界官员透露,4月11日,欧洲航天局的“阿里安—5”火箭的“火神”主
Singapore’s Digital Maritime Satellite Communication Service This was announced by Singapore Telecom on April 1. Its investment is S$12 million. Ships, vehicles, and even individuals using small or portable terminals can communicate with any location. Using a digital approach, the volume is about half the size of the simulation, the price is about 25,000 US dollars, and the price is nearly 30%. The new machine charges $5.5 per minute and the old machine charges $8.75. “Ariane 5” core engine ground explosions According to European government and industry officials, on April 11th, the “Vulcan” master of the “Ariane 5” rocket of the European Space Agency