XICHANG彩娱乐, Sept. 19 (Xinhua) -- China on Thursday launched two new satellites for the BeiDou-3 Navigation Satellite System (BDS-3) from the Xichang Satellite Launch Center in southwest China's Sichuan Province.
The two satellites, the 59th and 60th satellites of the BeiDou family, were launched at 9:14 a.m. (Beijing Time) by a Long March-3B carrier rocket and the Yuanzheng-1 (Expedition-1) upper stage attached to the carrier rocket.
They are the second group of medium Earth orbit (MEO) satellites launched since BDS-3 was formally commissioned to provide satellite navigation services worldwide. After entering orbit and completing in-orbit tests, they will be connected to the BDS system.
一个是库里这场比赛的发挥非常强势，不仅没有出现浪投，也没有出现什么致命失误，全场比赛保持专注的情况下，砍下31分10助，这样的发挥是让人肯定的。现在来看，库里需要持球，还需要挡拆，彩娱乐专线不能一直打无球，这是科尔必须想明白的地方。甚至当库里砍下30分的时候，勇士4胜0负，他必须要完成暴走。
近日，孙颖莎的“巴黎奥运奖励”终于兑现，一辆崭新的国产红旗车正式交付到她家中。虽然莎莎本人未能亲自前去领奖，她的父母代为出席。莎爸莎妈的脸上洋溢着幸福的笑容，满满的骄傲写在脸上。
Compared with the previous group of MEO satellites, these new satellites feature upgraded onboard atomic clocks and new inter-satellite link terminals.
They will further improve the reliability of the BDS-3 system and the performance of its positioning, navigation and timing (PNT), global short message communications and other services.
The satellites will also be used for new technology tests for the next generation BDS system, according to the China Satellite Navigation Office.
China will accelerate the construction and development of the next-generation BDS system, and increase technical research on a variety of PNT methods that do not rely on satellites, said the office.
The satellites and launch vehicles were respectively developed by the Innovation Academy for Microsatellites under the Chinese Academy of Sciences and the China Academy of Launch Vehicle Technology under the China Aerospace Science and Technology Corporation.
This launch was the 535th mission involving Long March series carrier rockets. ■彩娱乐
