The great difficulties are that it is rather hard to make such a sine wave inverter as that small as a normal square wave or corrected sine wave auto inverter.

车载逆变器输出正弦波的难点在于，无论是体积还是效率都很难和方波或修正正弦波逆变器媲美。

youdao

We're now scaling up to make cells that will be hundreds of square centimeters-the size of a normal cell.

我们现在正在增加它们的尺寸以使它们达到几百平方厘米——这是正常电池的尺寸大小。

youdao

One is that a normal distribution falls off according to the negative exponential of the square of the distance from the mean.

一个是正态分布下降是依据中间部分转角处到平面距离的负指数。

youdao

And a graphic artist painting a normal canvas would certainly not have attracted the crowds in Times Square that the female canvases did.

FORBES: Hot summer trend: Using naked people to sell stuff?

The fountain, located in the market square, was switched off last week after "higher than normal" levels of legionella were found in the water.

BBC: The water fountain at Northampton's market square

Normal atmospheric pressure varies, but is usually around 14.7 lbs per square inch (psi).

FORBES: Why Spring Means Higher Gasoline Prices