air acetylene welding
... aikinite 针硫铋铅矿 air acetylene welding 空气乙炔焊接 air adit 通风平硐 ...
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空气-乙炔焊接 air-acetylene welding
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采用空气-乙炔火焰原子吸收光谱法快速测定装饰用焊接不锈钢管的镍含量，测定波长为232。
Nickel content in welded stainless steel pipe for decoration was determined fast by flame atomic absorption spectrophotometry, and the wavelength of determination was 232.
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