Background: Magnetic resonance diffusion-weighted imaging ( DWI) has been used in many diseases of central nervous system, but were restricted in the use of abdominal imaging, because of the movement of breathing exercise and other factors affecting the imaging quality.

The data was compared with that in 2000.Results Body height, weight, chest circumference, and breathing capacity of male and female students at age of 7-18 in Hefei increased with age and were higher than that in 2000 to some degree.

结果2005年合肥地区7~18岁城乡男女生身高、体重、胸围、肺活量四项指标均有随年龄增大而增加趋势，且均较2000年有所不同程度增长。

Simulation and industry application results show that the predictive model can realize accurate predication of the breathing capacity for imperial blast furnace, which leads to a notable increase of plumbum and zinc output.

仿真和工业应用结果表明：所提出的模型能很好地实现密闭鼓风炉透气性的预测，并能使铅锌产量得到显著的提高。

Based on gray theory and neural network, the breathing capacity predication model of an imperial blast furnace was constructed by self-adaptive integration technology according to the melting process in an imperial blast furnace.

以密闭鼓风炉熔炼过程为研究对象，采用自适应组合集成技术将神经网络NN和灰色理论有机结合的方法建立了密闭鼓风炉透气性预测模型。

During each test they were monitored for exercise time, breathing capacity, work of breathing and symptoms of exertion.

在每项测试期间，分别对他们的练习时间、呼吸量、呼吸作用和劳累程度进行了监测。

Predicative model based on neural network and gray theory for imperial blast furnace breathing capacity

基于神经网络和灰色理论的密闭鼓风炉透气性预测模型

The scientists also measured breathing capacity in 2,120 schoolchildren from the communities during three periods: 1994-1998, 1997-2001 and 2007-2011.

科学家们还分三个时间段（1994-1998年，1997-2001年和2007-2011年）分别测定了这些社区中2120名学龄儿童的肺活量。

Swimming can not only strengthen your body but also enhance your breathing capacity; it is great exercise.

游泳不但能锻炼身体，也能增强肺活量，是很好的运动。

Of the 37 tested masks from major brands in China, only nine were adequate in filtering air borne pollutants and enabling smooth breathing, said a survey conducted by the China Consumers Association in March 2014.

2014年3月，中国消费者协会展开的一项调查表明，在37个中国主要品牌的测试面罩中，只有2个品牌可以有效过滤空气中的污染物，使得呼吸顺畅。

A regular diet of bird's nest can help alleviate the trachea, smooth breathing, benefit the control of asthma, expel phlegm, recover vital energy and extend longevity.

经常食用燕窝可以帮助缓和哮喘，使呼吸顺畅，有益于哮喘控制，清痰，恢复体能和长寿。

Determination for Air Breathing Quantity of Atmospheric and Low Pressure Tank and Selection of Its Breathing Valve

常压、低压储罐呼吸量的确定及呼吸阀的选用

The equations on the maximum breathing capacity for breather valve are given by theoretical analyses and calculations, and it is considered that the diameter of breather valve to be selected should be on the basis of the maximum suction capacity of induction valve.

通过理论分析和计算，给出了呼吸阀最大通气量的计算公式，并认为呼吸阀口径的选取应以吸气阀侧的最大吸气量为依据。

Breathing Valve shall be set on roof of the fixed-roof tanks, which can make the tanks safe and reduce the loss of the stored liquids as evaporation.

呼吸阀安装在固定顶罐的通风装置，起减少油品蒸发损耗，控制储罐压力的作用，它也可与阻火器联合安装使用。

When the tank pressure of the gas control valve in the mechanical ventilator pressure within the breathing valve does not move and maintain airtight tank;

当罐内气体的压力在机械呼吸阀的控制压力范围之内时，呼吸阀不动作，保持油罐的密闭性；

Two-step Breathing Valve Can Ensure the Safety of Oil Tank

两级式呼吸阀能保证油罐呼吸安全

She was breathing using an oxygen mask.

她正在用氧气面罩呼吸。

If you're not feeling well or have symptoms such as fever, fatigue, cough and trouble breathing, a mask is also needed to prevent you from spreading viruses to others.

如果你觉得不舒服或者是出现发热、乏力、干咳、呼吸困难等症状，也应该佩戴口罩，防止病毒传染给其他人。

Connected with the exhaust vent of the breathing mask or the respirator by corrugated tubes, this device gathers exhalation containing a large amount of causative agents through the completely leakproof ductwork and then expels purified air after multiplicate disinfection by high temperature, high pressure and chemical disinfectant.

该装置以波纹软管与呼吸面罩或呼吸机上的排气孔连接，于完全密封的管道系统收集含有大量致病因子的呼出气，经高温、高压及化学消毒剂等多重杀毒灭菌后排出清洁空气。

Wear a breathing mask with an active carbon filter; do not inhale fuel vapours.

请佩戴带有活性碳过滤器的呼吸面具；切勿吸入燃油蒸气。

Breath-holding, shallow breathing and hyperventilating can all trigger something called the sympathetic nervous system ( SNS).

屏气凝神、呼吸短促和气喘吁吁都会触发交感神经系统。

However humans are used to shallow breathing;

然而，人类已习惯于浅呼吸；