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- In the tracking-mode, the instrument generates an increasing or decreasing rate of beeps, depending on the gas concentration detected. 在检测模式下,仪器根据气体含量来增加和减少频率不同的嘟嘟声。
- weak gas concentrations detection 微弱气体浓度检测
- gas concentration detection 气体浓度检测
- When the intake air volume is low (the temperature of the exhaust gas is low) current flows to the heater to heat the sensor for accurate oxygen concentration detection. 当进气量低时(废气温度低),就向加热器供电,加热传感器以精确检测氧浓度。
- Non-dispersive Infrared (NDIR)spectroscopic technique based on Lamber-beer law is used to detect trace gas in air.In the Lamber-beer law,approximation absorbance is linear to gas concentration. 针对城市痕量污染气体检测中,所测气体浓度低、吸收弱,采用两点标定和高浓度标气定标造成吸收曲线误差增大的问题,本文提出了采用低浓度标气、多点定标的方法来获得吸收曲线的方法来建立吸收方程。
- 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。
- 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。
- 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;
- The gas concentration was finally inversed by further processing the DOAS of the gas. 进一步处理得到气体的差分吸收光谱,从而反演出气体浓度;
- Peanut (Arachis hypogaea L.) culitivars LH11 (Al-resistant) and R1549 (Al-sensitive) were selected through root elongation experiment, hematoxylin dying and Al3+ concentration detection in root tips. 结果表明,通过根长试验、苏木精染色和根尖铝离子含量测定,筛选到耐铝品种LH11,铝敏感品种R1549。
- In the EGP group, the Gas concentration is related to the Hp infection, P<0.01. Conclusion Hp is one of the major causes for illness. EGP组Gas浓度与Hp感染情况有关 (P <0 .;0 1)。
- The most obvious difference of gas concentration occurs at the places above and under the burner plane, along the gas flow direction. 喷嘴平面上、下气体组成差别很大,沿气流方向越靠近炉膛出口,这种差异越小。
- The optical analysis method of gas concentration has advantages of large measurement range,high precision,untouched on-line measurement and so on. 气体浓度光学分析方法具有测量范围宽、精度高、非接触在线测量等优点。
- An approximate formular to calculate the absorbing gas concentration profile from the radiation transfer equation and the transmissivity equation is derived. 推演得到由辐射传递方程和透过率方程求解吸收气体浓度分布的近似公式.
- An iterative solution of the radiation transfer equation for the temperature profile is established assuming a known absorbing gas concentration distribution. 建立了通过已知吸收气体浓密分布;由辐射传递方程反演温度分布的迭代法.
- Abnormal gas concentration is correlative withabnormal pore fluid pressure, and there is also certain correlation between abnor-mal pore fluid pressure and acoustic transit time. 经研究,异常含气浓度与异常孔隙流体压力之间存在相关性,而异常孔隙流体压力又与声波时差之间存在相关性,且这种相关性早有定量描述。
- solution concentration detection 溶液浓度检测
- Through building up the maths model of the relation between the circle air and gas concentration,expound the gas concentration changing and treatment measures in detail. 通过循环风时对瓦斯污染数学模型的建立,详细阐述了在各种情况下,瓦斯浓度的变化情况及治理措施。
- formaldehyde concentration detection 甲醛浓度探测