抖sen磁性英語(yǔ)教數(shù)學(xué)

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https://online2.tingclass.net/lesson/shi0529/0009/9807/mryj422035637.mp3

https://image.tingclass.net/statics/js/2012

Einstein`s theory of relativity is E=MC2, This means that energy equals mass, times the speed of the light squared.

愛因斯坦相對(duì)論公式是E=MC2，意思是能量等于質(zhì)量乘以光速的平方。

The Pythagorean equation is A squared plus B squared equals C squared. This means for all right angle triangles, the squared on the hypotenuse is equal to the sum the squares on the other 2 sides.

勾股定理的等式是A2+B2=C2。意思是直角三角形斜邊的平方等于兩直角的平方和。

Π is the circumference dividedby the diameter of any circle. It`s impossible to know the exact value. ButΠis approximately 3.14159265358979328462······

Π等于任何圓的周長(zhǎng)除以其直徑，無(wú)法直到它的確切值，但是Π接近于3.14159265358979328462······