The existing standard for LABS at UBC is 10 air changes per hour.
UBC实验室目前的标准是每小时换气10次。
The test showed there are only 0.6 air changes per hour, while many older homes can have several air changes per hour.
试验表明有每小时只有0.6空气的变化，而许多老房子都可以每小时几换气。
There shall be 10 air changes per hour of ventilation in wet laboratories and 8 air changes per hour of ventilation in dry laboratories.
化学实验室空气换风量至少为10次每小时，仪器室至少为8次每小时。
To get a feel for what this would mean, bear in mind that the amount of oxygen in a given volume of air changes with atmospheric pressure, and the local pressure changes with the weather.
要了解这将意味着什么？给定体积的空气中的含氧量是随着大气压变化而变化的，而当地的气压又是随天气变化的。
They simply sense changes in their environment, as for example when the mound's wall has been damaged, altering the circulation of air.
它们只是简单地感觉到它们所处环境的变化，例如，当土堆的壁被破坏时，会改变空气的循环。
During all phases of sleep, several changes in the air passages have been observed.
在睡眠的各个阶段，呼吸道中产生了一些变化。
They studied the sun's movement and also paid attention to other natural changes such as air temperature, water and plant growth.
他们研究了太阳的运动，还关注了其他自然变化，如气温、水和植物生长。
Researchers are developing sensors that pick up the subtle changes in the larynx and mouth when words are formed, even if there is little or no air going through the windpipe.
研究人员正在研发一种传感设备，该设备可以采集说话时喉与嘴的微妙变化，即使很少或根本没有空气通过气管也不影响其功效。
With AIR, these types of frameworks now have a means of being delivered and run with a connection, and a robust means to store data changes while disconnected.
但通过AIR，这些类型的框架现在可以通过连接进行发布和运行，它们同时也拥有一种强大的方式保证在断开连接后依然保存数据变化。
Other factors include changes in solar activity, the increased water vapour that can be held by warmer air and soot and other particles produced by fossil fuel and wood burning in Asia.
其他因素包括太阳活动，通过温暖的空气、烟尘、在亚洲化石燃料和木材燃烧产生其他粒子的变化都可以增加水汽以至变暖趋势降低。
Their method exploits the fact that water vapour changes the speed at which radar waves travel though air.
他们的方法揭示出了这样一个事实：水蒸气会改变雷达波穿越空气时的速度。
Warmer air melts glaciers and changes precipitation patterns.
随后，受热空气融化冰川，改变降水格局④。
Some also suggest that animals detect changes in the air or in electromagnetic fields.
另外一部分科学家则认为动物能够察觉空气或者电磁场里发生地变化。
Such changes call for an overhaul of the way Britain runs air travel.
这些改变呼唤英国去审视其民航运营方式。
The texture and colours of ice can also vary.The lower the air content, the more the colour changes from white to blue - just like your fingers.
冰的结构和颜色也千变万化。冰中的空气含量越少，其颜色变化就越多。
That never changes if there is no air drag or air friction of any kind.
它未曾变过,如果没有空气阻力,或任何摩擦力。
But climate change has another effect: It changes patterns of global air circulation.
但是气候变化还有另外一个影响，即它可以改变空气循环的模式。
But that changes the instant you set eyes on some of the items set to go under the hammer next month as part of a sale of the contents from the Bel Air home that Michael was renting.
而这一事实，则使得部分将要出现在下个月举行的拍卖会上的物品显得与众不同，因为届时迈克尔曾在百莱荷租赁的房屋中的部分遗物将会进行拍卖。
The Clean air Act requires major sources of air pollution to obtain such permits before making changes that would result in a significant emissions increase of any pollutant.
清洁空气法令要求主要空气污染源需获得这种许可证，以防止污染物排放量的严重增加。
As a soccer ball slows down after it's kicked in the air, the air flow around it changes from turbulent to smooth.
当球在空中速度减慢时，周围的气流从湍流变为稳定的层流。
Sun, air and wind cause quick chemical changes.
太阳、空气和风引起快速的化学变化。
Dr Sobel and his team then developed a system for measuring changes in air flow caused by sniffing.
于是，Sobel博士和他的团队开发了一套系统，用以测量由闻嗅造成的气流的变化。
The hidden lower level contains the barrel cellar, with room for storing up to 300 wooden barrels. This space is largely protected against changes in air temperature and humidity.
隐藏的低层包含桶窖，房间存储的木桶达到300个。该空间在很大程度上维持空气的温度和湿度，免受改变。
We spoke of the elementals of the air and weather changes in relation to ways we've heard about to manipulate and direct storms.
我们说四大要素大气和天气的变化联系方式，而且我们已经听说关于操纵和直接风暴。
These chemical changes decrease the acidity of the water and enable the it to absorb more CO2 from the air, thereby helping to reduce planetary warming.
这样的化学反应将会降低海水的酸性，并使之能够从大气中吸收更多的二氧化碳，从而有效减轻全球温室效应。
Among these changes, the air pollutions resulting from a huge number of automobiles and coal-burning is almost the severest.
在这些变化中，大量汽车和煤燃烧产生的空气污染是最为严重的。
Among these changes, the air pollutions resulting from a huge number of automobiles and coal-burning is almost the severest.
在这些变化中，大量汽车和煤燃烧产生的空气污染是最为严重的。
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