因为阀瓣就像蝴蝶，因此也叫蝴蝶阀。

Because the valve is like a butterfly, also called the butterfly valve.

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它是对射弹散布大小的一种表示，因此也叫散布精度。

It is a projectile the size of an expression of spreading, it is also called spread accuracy.

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一些人认为墨菲定律最早是由一位名叫莎德的人提出来的，因此这个定律也应该以他的名字命名。

Some people believe that Murphy's Law was first proposed by a guy named Sod and the law should be called after him accordingly.

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