交通量增大，这就需要拓宽道路。
交通事故的数字与交通量的增长成正比。
The number of accidents is proportionate to the increased volume of traffic.
正在修建新的道路以应付增加了的交通量。
New roads are being built to cope with the increased volume of traffic.
一条自行车道会鼓励他们骑自行车上下班，这样会减少高峰时间的交通，而不是促进增长交通量。
A bicycle lane would encourage them to use bicycles to commute, and so would reduce rush-hour traffic rather than fostering an increase.
研究表明，在美国，将道路的规模扩大一倍，只会使交通量增加一倍，这样我们又回到了事情的起点。
In the US, studies have shown that doubling the size of a road can simply double the traffic, taking us back to the starting point.
在线液相色谱-质谱联用法是一种高通量的方法，用于分析生物流体中的小分子。
On-line liquid chromatography-mass spectrometry is a high throughput method for the analysis of small molecules in biofluids.
研究了光通量和昼夜温差对自养培养马铃薯试管苗生长的影响。
The effect of PPF and DIF on plantlet growth of potato in vitro under photoautotrophic condition was investigated.
通常根据底物水平的磷酸化和糖酵解通量的估计来估计能量供应。
Energy provision is usually estimated from estimates of substrate-level phosphorylation and glycolytic flux.
这些孢囊梗的形成在不同的光通量下起作用，因此在特定的感光体下起作用。
The formation of these sporangiophores work at different light fluences and therefore with specific photoreceptors.
求通量的线积分就变成这样了。
来看看更多的取通量积分的方法。
关于建立通量积分，又问题吗？
也可以是一个向量场的通量，等等。
那么现在直接计算通量就变得更难了。
Well, then it becomes harder to calculate the flux directly.
这和其他通量积分是一样的。
我不需要真的计算通量积分。
也就是通量的格林公式——散度公式。
我们需要计算通过s的通量。
我们需要计算通量的积分。
需要建立向量场点乘nds的通量积分。
So, we need to set up the flux integral for a vector field dot ndS.
每当做通量的曲面积分时，你要做两件事。
Whenever you do a surface integral for flux you have two parts of the story.
事实上，在相反的方向，两次计算了这些通量。
So, in fact, you'll be summing the flux through these guys twice with opposite orientations.
通量之所以为零，是因为根本没有东西通过曲面。
Flux is going to be zero because nothing passes through the surface.
记得之前我们曾经学过，二维空间中曲线的通量。
Remember not so long ago we looked at flux of a two-dimensional field of a curve.
只是沿着曲线流动，所以通量为零，F与C相切。
They are just flowing along the circle around and around so the flux will be zero. F now is tangent to c.
一个是要取通量的向量场。
我们想要找出，电场对于一个封闭曲面向外的通量。
Let's say that we want to find the flux of the electric field out of a closed surface.
最后，磁通量随时间改变，产生了我们叫做电压的参数。
Finally, magnetic flux varies with time, leading to the quantity we call voltage.
注意，我们一直在描述，通量就是流过曲面的流体的量。
Remember, we've been describing, flux means how much fluid is passing through this surface.
“我估计他们挑选了一个非常大的[甲烷]通量，”他说。
"They picked a very large [methane] flux, in my estimation", he says.
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