Air in the breathing zone (about 30cm from the mouth) was sampled for each trip to measure PM concentrations.
研究者在每个参试者嘴巴前30厘米区域采集空气样本并测量颗粒物质浓度。
If [sprays are] used, people can protect themselves by opening Windows, avoiding the application near the breathing zone, and by using masks or other types of personal respiratory protection.
如果一旦使用了喷雾剂，可以通过开窗，不在呼吸区域使用，应用面罩或其他的个人呼吸道保护措施来保护自己。
The possibility of suck-back of fume cupboard exhaust gases into building air intakes, open Windows or the breathing zone of people working on the roof or in other buildings should be investigated.
应该调查通风橱废气回吸至房屋内的进风口、打开的窗户或者房顶工作人员的呼吸区域或者其它房屋的可能性。
Both linear and nonlinear track resistances are then discussed. Methods of computation with linear variable resistance are presented for the static zone and the breathing zone situated on the bridge.
然后对两种类型的变量阻力进行分析，并提出了当桥梁处于无缝线路固定区和桥上存在伸缩区的情况下采用线性变量阻力的计算方法。
This deep breathing and placement of the hands and feet will create a comfortable zone for you to prepare your body and mind for sleep.
这种深呼吸和手脚叠放姿势将创造一个舒适的氛围，有助于调整您的身心进入睡眠状态。
And though several European airlines conducted successful test flights in the danger zone, the engines of a Finnish military jet suffered considerable damage as a result of breathing in the ash.
尽管几家欧洲航空公司成功进行了穿越火山灰区域的测试飞行，但是因发动机吸入火山灰，芬兰一架喷气式战机损失惨重。
Still, the legislature's prompt response to a crisis that had begun to envelop the country (and to terrify euro-zone leaders) appears to have won Italy some breathing space.
立法机构对危机的快速响应将缓解意大利面临问题，也会吓坏欧元区领导人，但看来会为这个国家赢得喘息的空间。
They'll be able to listen to your breathing and guide you to either speed up or slow down, helping you zone in on the correct threshold pace for your current fitness.
根据你的呼吸频率，他们将指导你加速或减速，从而帮助你在当前身体状况下，找到适合你的门槛速度。
They'll be able to listen to your breathing and guide you to either speed up or slow down, helping you zone in on the correct threshold pace for your current fitness.
根据你的呼吸频率，他们将指导你加速或减速，从而帮助你在当前身体状况下，找到适合你的门槛速度。
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