1.
Training on proper use and limitations, including practice putting the respirator on and wearing it is required.
通过培训了解如何正确使用防毒口罩并认识其限制性，练习按照要求正确佩戴防毒口罩。
2.
"His tobacco stinks," said Hung-chien, "and now with three mouths puffing away at once, it's really unbearable.I should have worn a face mask.
鸿渐道：“他的烟味难闻，现在三整跟同时抽，真受不了，得戴防毒口罩。
3.
Fit of the respirator to the face is very important. If it does not fit properly, airborne contaminates will penetrate (enter underneath) the facepiece seal.
佩戴合适脸型的防毒口罩非常重要。否则空气中的有害细菌仍能够从口罩和脸部的缝隙中渗透进来。
4.
Individuals with a compromised respiratory system, such as asthma or emphysema, should consult a physician before wearing a respirator.
特殊情况人群如哮喘、肺气肿病人在佩戴防毒口罩前应首先咨询医师。
5.
filter for dust respirators
防尘口罩用过滤材料
6.
What happens when they poison the water and you don't have a gas mask?
要是他们要在水里下毒 你没有防毒面罩怎么办?
7.
Test method for the dead space of filtering particle respirator.
过滤式防微粒口罩死腔的试验方法.
8.
So, you're selling designer SARS masks for dogs?
你在卖专给狗戴的防SARS的口罩？
9.
General technical requirements for self-inhalation filtertype dust respirator.
自吸过滤式防尘口罩通用技术条件.
10.
A covering worn over the nose and mouth, as by a surgeon or dentist, to prevent infection.
口罩外科医生或牙医佩戴的防止感染的覆盖物
11.
Test method for filter efficiency of filtering particle respirator.
过滤式防微粒口罩过滤效率的试验方法.
12.
Test method for total inward leakage of filtering particle respirator.
过滤式防微粒口罩总透漏率的试验方法.
13.
Doctors and nurses working in an operating theatre have to mask their noses and mouths with a special clean cloth.
医生和护士在手术室工作时必须用特制消毒口罩蒙住口鼻部位。
14.
mask for protection from dust odors etc., of textile materials (excl. masks with replaceable filters)
口罩,用于防尘或气味等用,纺织材料制（不包括有可更换滤层的）
15.
Test method for airflow resistance of respiration of filtering particle respirator.
过滤式防微粒口罩对空气流呼吸阻力的试验方法.
16.
To Anaylisis the Perineum-shade Effect of Providing Against the Bacterium's Settle in the Urethra Exit of Male Patients
护阴罩对预防男性患者尿道外口细菌定植的效果分析
17.
Measurement and Analysis of Nozzle Flow in Respirator Leakage Tester Based on FLUENT
基于FLUENT的防尘口罩泄漏性试验装置喷头流量检测分析
18.
A protective covering for the face or head.
罩，防护罩用于脸或头的保护性覆盖物