常見(jiàn)例句雙語(yǔ)例句PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode .H 的銲接常用的方法是熱接觸銲接和使用銲條進(jìn)行熱氣銲。Man-made static magnetic fields are generated wherever DC currents are used, such as in electric trains or industrial processes such as aluminium production and in gas welding.在使用直流電的地方即産生人爲(wèi)的靜電磁場(chǎng)，例如在電車或諸如鋁生産和氣銲等工業(yè)操作程序中。Gas welding equipment - Safety devices - Part 2 : not incorporating a flame arrestor .氣銲設(shè)備。安全裝置。第2部分：不含有廻火制止器的安全裝置。權(quán)威例句In the early 1900s Adolf Messer, the founder, quickly moved from gas lamps, suspecting that electricity would do the job better, to making welding equipment and industrial gases.ECONOMIST: Face value 返回 gas welding