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焊接冶金
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焊接冶金
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焊接冶金
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welding metallurgy
焊接冶金
在熔化焊接过程中发生的“气体—熔渣—金属”之间的物理、化学变化,熔化金属的结晶凝固,以及由于焊接热循环造成的焊接热影响区内金属组织和性能变化的过程。包括化学冶金和物理冶金。
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topoisomerases
Topol missile
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topological Abelian group
topological Abelian group (TAG)
topological algebra
topological algebraic system
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topological close-packed phases
topological closure
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