因此，生态系统以生物及其活动作为媒介，涉及能量和物质的循环、转化和积累。
Ecosystems thus involve the circulation, transformation, and accumulation of energy and matter through the medium of living things and their activities.
由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.
这只是它们在解剖学上，特别是循环系统上的某些适应性问题。
lt's just a matter of certain adaptations in their anatomies, specifically in their circulatory system.
制作了一个小肠绒毛微血管模型和一个循环模拟系统。
A small intestinal villosity microvessels model and a circulatory simulation system were made.
这些模板系统没有流控制——没有循环或条件。
These template systems have no flow control — no loops or conditionals.
由于通过蒸腾作用来循环那些降入丛林中的水，森林在上述系统中发挥了相当重要的作用。
The forest, by recycling the water that falls on it through evapotranspiration, plays an important part in this system.
可以按照相同的方法在文件上用循环设备创建加密的文件系统。
You can use this same approach to create encrypted file systems with the loop device on a file.
它是一个小型传送系统，由空气压缩机驱动，能将小型元件无休止的循环传送。
This is a miniature conveyer system driven by compressed air that transports small components in an endless cycle.
这个过程在一个密封圈系统中不断循环。
The process continuously cycles within a sealed, closed loop system.
然后可以对循环进行调节，这样就可以生成与原始系统一样多的中断了。
Then you can tune the loop so that you will be generating as many interrupts as in the case of the original system.
这种气候系统的循环每2到7年发生一次，上次抬头是在2007年。
This cyclic weather system normally occurs once every two to seven years, and last reared its head in 2007.
人们还可以在封闭的灌溉系统中循环用水以减少用水量、避免径流造成土肥流失。
You’d reduce water use and end runoff by recycling water in a closed irrigation system.
唯一脱离这个负面回馈循环圈的正面方式是调校整个系统。
The only positive way out of this negative feedback loop is to recalibrate the whole system.
丹尼尔带着他的循环电路系统参加了这次展览。
He entered an exhibit showing how the circulatory system works.
在这个系统里我们能够，从水池里再循环，水会回到容器里，喷雾，提供了连续的再循环。
So, we also have in this system a capability to recirculate from the sump this water and it goes back into the containment sprays to provide continuous recirculation.
在系统循环遍历每个连接时，其他连接不得不等待。
The other connections have to wait while you iterate through each one.
气候的变化能够改变这些生态系统的功能以及海洋中碳循环的方式。
Global change could alter the functioning of these ecosystems and the way carbon is cycled in the ocean.
正常的系统审计也可以帮助提炼安装新机器时所使用的安全策略，因为它有助于关闭关于实际使用的子系统的反馈循环。
Regular system auditing will also help refine the security policy used for new machine installations as it helps close the feedback loop on what subsystems are actually in use.
搜寻需要被关掉，即使是一小会，从而使我们的系统不会无休止的循环下去。
Seeking needs to be turned off, if even for a little while, so that the system does not run in an endless loop.
在同时使用了垃圾收集和引用计数的混合系统中，将会发生泄漏，因为系统不能正确识别循环引用。
In a hybrid system, where both garbage collection and reference counting are being used, leaks occur because the system fails to identify a circular reference.
德米科霍夫解释说这些动物通过血管相连，共用一套血液循环系统。
The scientist explained that these animals were connected by blood vessels, they had a mutual blood circulation.
保持你循环系统的正常运转，比方说，避开香烟和饱和脂肪，减少与年龄有关的损害大脑的刺激。
Keeping your circulatory system in working order, by, say, avoiding cigarettes and saturated fat, lessens the onslaught of age-related damage to the brain.
图3所示的系统是一个封闭循环，传感器负责为控制系统提供数据，而控制系统则驱动着环境中因素的变化。
The system shown in Figure 3 is that of a closed loop, with sensors feeding the control system that drive changes in the environment.
所谓日志就是一种特殊的文件，它会在一个循环的缓冲区内记录文件系统的修改，然后将其定期提交到文件系统。
The journal is a special file that logs the changes destined for the file system in a circular buffer. At periodic intervals, the journal is committed to the file system.
由于新的船闸将采用循环系统，尽管它们比现有的船闸大得多，但用水却少了7%。
Because the new locks will have recycling Chambers, they will use 7% less water than the existing locks, despite their larger size.
系统要最小化从制作调查表到处理回答的循环次数。
The system minimizes the number of questionnaire preparation-answer processing cycles.
一分钟后，你的血液循环系统结束了。
注意：要检测循环，在检测循环时，系统只会检查迭代select语句返回的结果。
Note: To detect a cycle, only the results returned by the iterative SELECT statement are checked.
尽管原来的系统压力测试可以同时执行，也应该同时执行，但是这次运行应该是循环进行的。
Although the original system stress test can and should have concurrent executions, this run should be iterative.
农用化工产品破坏了原始生态系统赖以生存的营养更新的自然循环。
Agrochemicals had destroyed the natural cycles of nutrient renewal that intact ecosystems use to maintain themselves.
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