Since the circulatory system is a closed loop, cardiac output and venous return are equal.

由于循环系统是闭环，心输出量和静脉回流血量是相等的。

I'm officially in what organizers are calling the closed loop.

我已经正式进入了奥组委所说的闭环系统了。

Here's why the crypto industry's collapse has happened in a closed loop.

以下是为什么业的崩溃发生在一个闭环中的原因。

Organizers say they're holding the games in a closed loop system.

组织者说，他们将在一个闭环系统中举办奥运会。

It feels like testing Ava through conversation is kind of a closed loop.

感觉通过对话来测试艾娃是一种闭环。

To improve its tracking of purchases, Facebook is moving to create a closed loop of its own.

Facebook正着手建立自己的闭环以改善对用户购买为的跟踪。

You can recycle virtually any used material, so long as you don't mix it together and that's called closed loop recycling.

你几乎可以回收任何用过的材料，只要你不把它们混在一起，这就是所谓的闭环回收。

China has some of the strictest rules on the planet and they include the country's closed loop system for the Olympics.

中国采取了一些世界上最严格的规定，其中包含了专为冬奥会设立的闭环系统。

China's closed loop system keeps them separate from the rest of Beijing as they train, compete or hang-out in the Olympic Village.

中国的闭环系统使得参赛选手在奥运村训练、比赛或闲逛时都与北京其他区域分隔开来。

It's not a closed loop in the home.

这不是家里的闭环。

A completely closed loop is impractical, at least for now.

完全闭环是不切实际的，至少目前是这样。

I thought all magnetic field lines were closed loops.

我认为所有的磁力线都是闭环的。

Therefore, these magnetic field lines would be closed loops that are infinitely large.

因此，这些磁力线将是无限大的闭环。

One best practice, for example, that we advocate is closed loop communication.

例如, 我们倡导的一种最佳实践是闭环通信。

But what are Open loop and closed loop?

那么开式和闭式呢？

Open loop scrubber and closed loop scrubber are different types of wet scrubbers.

开式和闭式是湿式脱硫塔的具体细分。

This means that the magnetic field lines surrounding a magnet always form closed loops.

这意味着围绕磁铁的磁场线 总是形成闭回路。

Other than that, there is hybrid type, which can choose between closed loop mode and open loop mode.

除此之外，还有混式的，可以在干式和湿式之间切换模式。

The concept of a circular economy, where resources are used, recovered, and regenerated in a closed loop, is being embraced by forward-thinking businesses and governments.

循环经济的概念, 资源在哪里被使用、回收、并在闭环中再生, 正被具有前瞻性的企业和政府所接受。

These strings may have ends (the so-called open strings) or they may be joined up with themselves in closed loops (closed strings) (Fig.

这些弦可能有末端（所谓的开弦），或者它们可能以闭环（闭弦）的形式与自身相连（图 1）。