The influence of flake and spheroidal graphite on oxyacetylene cutting characteristic of cast iron has been analysed.
讨论了石墨的物理性能，分析了片状和球状石墨聚集状态对铸铁气割性的影响。
The remaining 20%of the acetylene production is principally used for oxyacetylene cutting, heat treating, and welding.
乙炔生产的剩余20%主要用于氧乙炔切割、热处理和焊接。
In general, nonferrous materials cannot be cut by the conventional oxyacetylene cutting equipment commonly used for steel.
[nf - 7]一般，非铁基材料不可能采用常用于切割钢材的传统氧乙炔设备进行切割。
If oxyacetylene flame or plasma is adopted, surface coat that can impact welding quality shall be removed after cutting.
当采用氧乙炔焰或等离子切割时，切割后必须除去影响焊接质量的表面层。
Welding and cutting in 1949, Beijing has geo-drilling, electric welding and cutting etc oxyacetylene flame manual operation.
焊接与切割1949年，北京已有气焊、电弧焊及氧乙炔火焰切割等手工作业。
Welding and cutting in 1949, Beijing has geo-drilling, electric welding and cutting etc oxyacetylene flame manual operation.
焊接与切割1949年，北京已有气焊、电弧焊及氧乙炔火焰切割等手工作业。
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