The content of acetylene and other hydrocarbon in liquid oxygen measured by gas chromatogram has gas chromatogram concentrate method and direct method.
利用气相色谱浓缩法和气相色谱直接法测定液氧中乙炔及其他碳氢化合物含量。
The relation of acetylene content in the header outlet pipe of convertor with the service time of catalyst in the production of PVC by calcium carbide method was introduced.
介绍了电石法PV C树脂生产中转化器出口总管处的乙炔含量与触媒使用时间的关系。
The application of air-acetylene flame atomic absorption spectral method for measuring the iron content in carbonyl nickel powder is studied.
文章运用了空气-乙炔火焰原子吸收光谱法进行羰基镍粉中铁含量的测定。
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