Throughout this paper, positive pressure and negative pressure on a surface indicate pressure towards the surface and pressure away from the surface, respectively and net positive and net negative pressure refer to downward pressure and suction (upward pressure), respectively. ...
The invention relates to a positive pressure and negative pressure combined grouting method, belonging to a method for formation of a waterproof curtain and grouting and water plugging of cracking rocks in underground project construction. According to the method, three grouting shock tubes, two ...
To maintain positive or negative pressure in cleanrooms, adjacent spaces must be maintained at a lower or higher pressure than that of the cleanroom. If you implement a pressurization system into your cleanroom design, a pressure monitoring system is vital to ensure balance and consistency. The ...
Firemen should wear proper protective equipment and positive pressure self - contained breathing apparatus. 消防员须身穿保护装置及正压呼吸设施. 来自互联网 2. Half - pipe jacket ; positive pressure; negative pressure; strength destruction; stability reduction. 半管式夹套; 正压; 负压; 强度破环; 失稳...
PROBLEM TO BE SOLVED: To change a positive pressure pump and a negative pressure pump over to each other by change-over operation of a member without removing a part of a valve body, etc., on a pump doubly used for positive pressure and negative pressure. ;SOLUTION: It is a pump doubly...
During inspiratory pressure support (IPS) ventilation, first a negative airway pressure is produced by the patient to open a demand valve and then a constant positive airway pressure is maintained at a preset level while the patient inha... None - 《Journal of Critical Care》 被引量: 289发表...
a有一辆单车在我爸爸的车后面 Some bicycle in behind my daddy's vehicle[translate] athe purpose of initiating combustion 创始燃烧的目的[translate] a压力分为两种,一种是积极的,另一种是消极的。 The pressure divides into two kinds, one kind is positive, another kind is negative.[translate]...
Hi, dear all I have modelled external flow around building and I found that there are positive pressure and negative pressure. What's the meaning of
whether negativepressure,positive pressure,orequal pressure ventilation is required, to ensure an optimum fresh air [...] bigdutchman.de bigdutchman.de 无论是需要使用负压、正压还是等压通风,为保证禽舍获得最优的新鲜空气供给,大荷兰人公司提供不同进风系统产品供您选择:侧墙/屋顶进风窗、新鲜空 气烟囱...
2) negative air pressure 负空气压力3) positive and negative pressure transportation by gas power 正压和负压气力输送4) positive-negative pressure 正、负压力5) full throttle control air pressure 满负荷控制空气压力6) positive-negative pressure ventilation 正负压通气...