Black-black sensing element is a carrier catalytic element for the detection of 0 ~ 4% methane in air.
黑黑元件是用来检测空气中0 ~ 4%甲烷气体的载体催化元件。
The temperature control of the producing process of a planar carrier catalytic element has been operated manually so far, which has influence on both identity and productivity of the element.
平面型载体催化元件制作过程的温度控制一直沿用手工操作，从而使元件的一致性与成品率受到较大影响。
XPS data reveal that the state and the content of nitrogen element in the surface layers correlate fairly with the catalytic activity.
XPS实验结果证明活性炭表面氮元素的电子结构及含量对催化氧化活性有显著的影响。
Selenium element in teas can be determined by catalytic kinetic spectrophotometry.
采用催化动力学光度法对茶叶中硒的含量进行了分析测定。
Selenium element in teas can be determined by catalytic kinetic spectrophotometry.
采用催化动力学光度法对茶叶中硒的含量进行了分析测定。
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