您要查找的是不是：
- Analysis of Harmful Gas Concentration Variation in Tunneling Ventilation 隧道施工通风中的有害气体浓度变化分析
- Distribution of Harmful Gas Concentration in Highway Tunnel with Natural Ventilation 自然通风公路隧道有害气体浓度分布
- Harmful gases concentration 有害气体浓度
- How to reduce the harmful gas concentrations in chicken coop in Winter 冬季如何降低鸡舍内的有害气体浓度
- harmful gas concentration 有害气体浓度
- Put greenery to absorb harmful gas. 摆放绿色植物吸收有害气体。
- Harmful gases must be drawn out by centrifugal ventilator. 有害气体必须通过离心式通风装置排出。
- The factory discharges harmful gases into the atmosphere. 那家工厂将有害气体排放到大气中。
- There should be a way to prevent harmful gas from spreading. 我们应该想办法防止有害气体蔓延。
- We should find some ways to preventthe harmful gas from spreading. 我们应找到法子阻止有害气体的蔓延。
- This is a new way via dissolved gases concentr ation analysis to find partial discharge and acconding to diagnosis system to confirm partial discharge level. 目前局部放电的监测因受到电磁干扰和噪声干扰的影响，都没能达到满意的效果。
- Dampproof , dustproof and defending greasy dirt and harmful gas , sealing strong , acidproof alkali antidetonation. 防潮、防尘、防油污及有害气体，密封性强、耐酸碱抗震。
- Retardant, fire high-performance, does not produce harmful gases, low noise, do not pollute the environment. 难燃、防火性能高、不产生有害气体、噪声低、不污染环境。
- Through the gas absorption on the metal oxide surface, gas concentration change is measured. 通过气体吸附在金属氧化物半导体的表面,测定半导体电传导度的变化反映气体浓度。
- Ion-exchange fibre is a new type of functional fibre,which can be used to inhale andpurify harmful gases. 离子交换纤维是一种新型的功能性纤维，这种纤维可用来吸附净化有害气体。
- The elevated Gas concentration in patients with EGP could be correlated with Hp infection. 结论 Hp是EGP的重要致病因素之一 ,EGP患者Gas浓度升高与Hp感染有一定关系。
- The instrument can confect continuously the multiple gas concentration and can be adjusted continuously. 该系统可连续配制、并供给浓度值连续可调的多元混合标准气体。
- Dampproof, dustproof and defending greasy dirt and harmful gas, sealing strong, acidproof alkali antidetonation. 防潮、防尘、防油污及有害气体,密封性强、耐酸碱抗震。
- In the certain diffusion time the relation of gas concentration and diffusion depth is parabolic. 得出在一定的扩散时间内，气体浓度与扩散深度之间为抛物线关系；
- It allowed the earth to dissolve harmful gases, which had become part of the earth's atmosphere, into the oceans and seas. 它使地球把曾经存在于大气层中的有害气体溶解在海洋里。
