又称正形尾.鱼类的一种尾鳍，常见于硬骨鱼类.正尾的外形完全对称，形成相似的两叶鳍片.鳍片由软鳍条支持，无硬棘.正尾的内部结构不对称：尾椎骨末端上翘；尾下骨较尾上骨发达.正尾的形态与游速有密切关系，如鳍片深凹，正尾呈新月形，尾柄细而有力则游速快、游程长，如金枪鱼、鲐鱼、鲭鱼等.如鳍片中间凹陷，尾柄无明显变化，则游速不快，如鲤鱼等.GOOGLE英文翻译:Also known as being shaped tail. A kind of tail fins of fish commonly foun...
正尾 [zhèng wěi]
双语例句原声例句
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利物浦正尾百度行西班牙新星凯文·拉克鲁兹。
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目的利用尾动静脉插管技术实施清醒状态下大鼠高胰岛素-正糖钳夹实验并对该技术进行评价。
Objective To utilize tail arterial and vein catheterization technique to perform hyperinsulinemic-euglycemic clamp in conscious rats and to evaluate this technique.
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正挂在生活的细枝尾梢上，静悄悄的等着我们用心去发现。
Life is hanging in the twigs of the silent on edn thou shalt, waiting for us to find heart.
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All right, well that's correct. So let's try and read that through.
正解,我们再从头到尾看一遍
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