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Some properties of adjoint matrix are discussed. The properties are symmetry, antisymmetry, positive definite, positive semi-definite, orthogonal and characteristic value.

摘要讨论矩阵在对反对、正定、半正定、正交、特徵值等方面性质。

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3G, 401(K), a,

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PBS英语讯息

Today, they said the opposition's victory offers hope of breaking Erdogan's hold on power after 16 years.

今天他们胜利为击败埃尔多安带来了希望,埃尔多安掌权16年。

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VOA Standard 2014年10月合集

The report cites witness accounts indicating helicopters were used in systematic and repeated attacks, a capability the opposition lacks.

报告援引目击者描软肋直升机被投入使用并且进行复打击。

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BBC 听力 2014年4月合集

Opposition groups said dozens of people were injured when thick smoke caused suffocation and poisoning. More details from Lyse Doucet.

派组织毒气引发窒息和中毒,数十人受伤。Lyse Doucet报道。

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经济学人-综合

Opposition parties, which backed the expropriation, have labelled the Chevron deal a " reprivatisation" and challenged the legality of the decree.

支持国有化得佛兰交易是新私有化,他们也质问此法令合法性。

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BBC 听力 2013年5月合集

Opposition sources say the rebels launched an attack on the prison using suicide car bombs to try to blast holes in its walls.

来自消息,叛军试图使用自杀式汽车炸弹在监狱墙上打洞,以此发动袭击。

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BBC 听力 2015年10月合集

The oppositions say the court's decision paves the way for an impeachment process against president Rousseff, who was reelected less than a year ago.

法院判决为弹劾罗塞芙总统进程铺平了道路。不到一年前她刚刚再当选。

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BBC 听力 2015年1月合集

Syrian opposition sources say IS actually have more territory under their control now than when the United States and its ally started bombing last August.

来自叙利亚消息,与去年8月美国及其盟友开始轰炸之前相比,IS现在控制领土更多。

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