tight-weld
... autogenous-welding 氩氧锂接 tight-weld 密封焊性 weld-length 焊缝长度 ...
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选择软焊合金时应考虑其流动性、密封能力和导电性，此外？以提供光滑的加工表面。
Solder alloys are selected for their properties to flow, sealing ability, electrical conductivity, and for general body work to provide a smooth surface for finishing.
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