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激光焊
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激光焊
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激光焊
释
laser beam welding
激光焊
利用高功率密度的激光束照射工件使被焊金属熔合的焊接方法。
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urostyle
urotoxin
urotropin
urotropine
UrQM
Urritopsis nutricula
URS
Ursa Major
Ursa Major cluster
Ursa Major group
Ursa Major Moving Cluster
Ursa Major Ⅰ dwarf
Ursa Major Ⅱ dwarf
Ursa Minor
Ursa Minorids
Ursa Minor system
ursane
Ursell algorithm
Ursell function
Ursell-Mayer cluster expansion
Ursell's algorithm
URSI
Ursid meteor shower
Ursids
ursodeoxycholic acid
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