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1·He thought his invention could replace acetylene in welding factories.

他认为他的发明可取代乙炔在焊接工厂。

2·The merits of the acetylene gas and the defects of new type of welding gas are completely mixed together on the aspect of theory and practice.

理论和实践上把乙炔气的优点和新型焊割气存在的缺点完整的捏合在一起。

3·Acetylene (ethyne) Simplest alkyne, C2H2. A colourless, flammable, explosive gas, it is used as a fuel in welding and cutting metals and as a raw material for many organic compounds and plastics.

乙炔：最简单的炔(C2H2)，无色可燃气体，广泛用作金属焰焊接和切割的燃料，也是合成许多有机化学品和塑料的原料。

4·Self fluxing iron base alloys containing rare earths have been prepared. The self fluxing performance of these alloys in oxygen acetylene flame spray welding has been observed in detail.

制备了含稀土的铁基自熔合金并考察了这种自熔合金在氧-乙炔火焰喷焊过程中的自熔性。

5·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。

6·Application: Mainly used for conveying of oxygen and acetylene gases for welding and cutting equipment.

主要应用：用于输送焊接或切割用的氧气和乙炔。

7·Y-12 acetylene reducer is used in gas cutting and welding industry. It has steady performance, beautiful appearance and good cost performance.

型乙炔减压器是用于气体切割、焊接行业、性能稳定、外形美观、性价比高。