suction hood

And the TV cameras everywhere to see if you ever take the mask off are outrageous.

而且到处都是监视器检查你是否拿掉呼吸罩是一种侮辱。

half-mask respirator

半面罩式呼吸防护器

He has to use an oxygen mask to help him breathe.

他必须带氧气罩来帮助呼吸。

She held the rubber tight to her face and breathed fast.

她抓住橡皮紧紧地罩在脸上，急急呼吸。

anti-drawning mask

带氧气呼吸器的轻型潜水面罩

General technical requirements for self-inhalation filtertype dust respirator.

自吸过滤式防尘口罩通用技术条件.

Development of Full Mask of FMY Positive Pressure Oxygen Respirator

FMY正压氧气呼吸器全面罩的研制

A covering for the nose and mouth that is used for inhaling oxygen or an anesthetic.

氧气罩、麻醉罩用于为嘴或鼻子吸入氧气或麻醉的覆盖物

On edge absorbing push drag active hermetic hood ventilation cleaning system,use 40 percent wind amount of seam high side double on edge absorbing groove hood.

研制的侧吸式推拉活动密闭罩比条缝式高截面双侧吸槽边吸气罩可节省60％风量。

A. sitting the patient up; giving high-concentration oxygen by non-rebreather mask.

让病患坐立，并用非再吸入面罩给予高浓度氧气。

The affect of oxygen supply by breather bag-face cover during the early stage of brain regain consciousness

呼吸囊—面罩给氧在早期脑复苏中的作用

Passengers who have severe altitude illness should ask for an oxygen mask.

高原反应比较严重的旅客也可以使用吸氧面罩。

Respiratory Wear appropriate respirator when ventilation is inadequate.

呼吸当流通的空气不足时,穿戴适当的口罩.

Selection of Dust Exhaust Hood and Its Application to Dust Prevention of Jade Carving Workplace

吸尘罩的优选及其在玉石雕刻防尘中的应用

I need to buy a mask because I inhale a lot of dust when riding my scooter.

（我需要买各口罩，因为骑机车时慧吸进很多灰尘。）

Quantitative Evaluation of the Change of upper Airway Volume by CT Scan in Response to Continuous Negative Airway Pressure;

呼吸面罩内压力变化对咽气道容积的影响

Development of the CO_2 Automatic Welding System for the Filter Collection Hood of the Attracting Oil Piep

吸油管集滤器罩CO_2自动焊接系统的开发

THE OPTIMAL OPERATION OF MANAGEMENT AND TECHNOLOGY ON SUCTION PUMP MOVABLE HOOD FILTER

泵吸式移动罩滤池的优化运行与技术管理