a
  • Alfa：锗片, 3.2mm (0.125in) 或更小, 99.999% (metals basis)
  • Alfa：锗片, 3.2mm (0.125in) 或更小, 99.999% (metals basis)
b

Alfa：锗片, 3.2mm (0.125in) 或更小, 99.999% (metals basis)

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