這幾個專業(yè)詞句翻譯---求助

李斌文

由于水平有限，下面的句子翻譯不是很準(zhǔn)確，求各位專家?guī)头?，謝謝

+ d( E+ @6 n+ w8 O+ |  K１.鎢極伸出長度
２.不銹鋼同材質(zhì)焊接
３.低合金剛同材質(zhì)焊接
４.異種鋼焊接
５.封底焊接時采用背氬保護(hù)

李斌文

各位大哥大姐幫下忙啊，急等著要，自己翻的不過關(guān)啊，謝謝了

Hydale

１.鎢極伸出長度            Length of tungsten pole
２.不銹鋼同材質(zhì)焊接        Weld of stainless steel in same material
- }! L) ?/ V( p5 H7 ~5 g: z. t- d３.低合金剛同材質(zhì)焊接      Weld of low-alloy steel in same material
４.異種鋼焊接              Weld of fashion iron
５.封底焊接時采用背氬保護(hù)  Using argon protection when it was welding bottom for seal

養(yǎng)豬東籬下

1.tungsten electrode extension elongation
/ S% u! D$ z: X6 J( c2.same material welding of stainless steel
- A2 d+ P7 F; A0 ^8 y: J3.same material welding of low alloyed steel
1 P4 R! z; E# i! A3 p4.special steel welding
5.sealing welding with argon protection

, H: z1 u$ b7 p4 o$ M僅供參考.第5句的意思與原意稍有出入.