网络释义专业释义
展台中部安置一块 圆锥曲线公式 答：圆锥曲线的公式主要有以下： 1、椭圆∶焦半径∶a+ex(左焦点),a-ex(右焦点),x=a/c 2、双曲线∶焦半径∶|a+ex|(左焦点极圆锥曲线)|a-ex|(右焦点),准线x=a/c 3、抛物线(y=2px)∶焦半径∶x+p/2准线∶x=-p/2 弦...
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...）；l为右准线；故MF₂=r₂=a-ex； MF₁=r₁=2a-r₂=2a-（a-ex）=a+ex；MF₁，MF₂，d成等比数列，故有：r2₂=dr₁，即有（a-ex）2=（a+ex）（a-ex）/e，化简得e（a-ex）=a+ex，故 x a= e-1 e(e+1)，由于M在椭圆上，故-a≤x≤a，即有-1≤x/a≤1，∴-1≤ e-1 e(...
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a ex 附属部分 ; 附属建筑物 ; 附件 ; 附录
a ex memory 相联存储器
a ex storage 相联存储器
S&P BMI China ex-A-B-Shares 指数总收益率
A Horrible Ex 一次可怕的经历
SEND A SYS-EX FILE 发送系统信息
EX A IN 外部音频输入
a mi ex 我恨
Ex-A-TEC logo 前技术
双语例句原声例句权威例句
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His ex-wife reported him to police a few days later.
他前妻几天后向警察告发了他。
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I know he's an ex-champion boxer, but he can be a big baby sometimes! He hates spiders.
我知道他是前拳击冠军，但有时他像个大孩子！他恨蜘蛛。
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Mentioning her ex-husband was a bit of a clanger.
提及她的前夫是有点令人难堪的失言。
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The former football star was accused of killing his ex-wife and a male friend of hers in Los Angeles.
VOA: special.2011.06.06
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The answer is generally not because if you buy the stock before it goes ex-dividend, you get--you have to pay a higher price, but you get the dividend.
答案一般来说是不用,如果你买了股票,是在除息之前买的,你的买入价高,但能分到红
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There's a term for that--they call it going ex-dividend.
有一个专门的术语,叫做"除息"
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