階字的意思

这导致了泥土阶或石阶的建构，安排观众们面对讲演者坐成一个半圆形。

This led to the construction of earthen or stone steps, arranging the audience into a semicircle in front of the speaker.

我们建立了一套描述聚丁二炔晶体中的三阶非线性光学过程的数学公式。

We derived a set of mathematical formulas for describing the third-order nonlinear optical process in polydiacetylene crystals.

阶背式轿车队列的平均减阻率最大。

The drag reduction of the notchback car platoon is the most.

你会注意到我并没有提及波特兰阶序列。

You will noticed I didn't mention Portlandian sequence.

勃朗阶延伸回上新世。

The Blancan extends back into the Pliocene.

北美西部晚期的坎帕阶霸王龙的化石记录存在地理差异。

The fossil record of late Campanian tyrannosauroids of western North America has a geographic gap.

侧脑室穿刺后，脑脊液中的红细胞可广泛分布于鼓膜前角和前庭阶。

Red blood cells in CSF can widely distribute in scalae tympani and scala vestibuli after lateral ventricle puncture.

别里耶夫选择了悬臂式上单翼和双阶船身的结构，后者具有较大的横截面。

Beriev chose a scheme of the single-cantilever monoplane with two-step boat, which had a large cross-deadrise.

马镫的一阶效应已是非常巨大。

The first-order effects of the stirrup were dramatic.

比零阶反应常见得多。

Much, much more common than zero order.

我们先讨论零阶反应。

So let's talk about zero order reactions.

毕竟，该地区是它的入门之阶。

After all, the region is on its doorstep.

那么二阶导数判定是怎样的呢？

So, what does the second derivative test say?

我是说现在已经有两个一阶偏导数。

I mean we already have two first derivatives.

它就是位置，对时间的一阶导数。

That's the first derivative of the position versus time.

这是一个零阶反应。

So that's zero order reactions.

她一步迈四阶楼梯，把自己锁在她的房间里了。

She took the stairs four at a time and locked herself up in her room.

他们说二阶导数转为正值了。

The second derivative, they say, is turning positive.

在通常的形式下，这个反应看起来就像零阶反应。

So in the usual formulation, this would still have the appearance of a zero order reaction.

总而言之，我们所做的就是求二阶导数。

And all we did, further, is take that second derivative.

现在我们看看，这个一阶反应的半衰期。

Now, we also can usefully look at the half life, in this case, in the case of first order kinetics.

提升性能的一阶谓词，如果重写为索引。

Stage 1 predicates that can improve performance if rewritten as indexable.

零阶反应很少。

zero order reactions are rare.

它是位置向量的二阶导。

So, it's the second derivative of a position vector.

它们唯一共同之处就是,它们都被叫作一阶微分算子。

The only thing they have in common is that both are what's called a first order differential operator.

在皮肤上，用色阶和色彩平衡微微提升些色调。

For the skin, a Levels and a color Balance to add subtle color enhancement.

通常，一阶机械特性就能为预测光学性能提供足够的精度。

Often, only first-order mechanical behavior is needed to provide sufficient accuracy in the prediction of optical performance.

这意味着，不管放什么进去，都会包括一阶偏导。

That means it involves the first partial derivatives of whatever you put into it.

这意味着，不管放什么进去，都会包括一阶偏导。

That means it involves the first partial derivatives of whatever you put into it.