1) oxygenmask altitude
需用氧气面罩的高度
2) face opening of exhaust hood
排气罩的作用面开度
3) oxygen masks
氧气面罩
1.
Objective To observe the effects of different leakage of oxygen mask on its protection from hypoxi-a, so as to provide experimental basis for establishing the criteria to detect the gasproof property of oxygen masks.
目的 实验观察氧气面罩渗气对其供氧防护效果的影响,为制定氧气面罩气密性检测标准提供实验依据。
5) face opening of exhaust hood
排气罩的酌面开度
6) closed type oxygen mask
气密式供氧面罩
补充资料：需用
1.需要的用度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条