5 SIMPLE TECHNIQUES FOR IN TEM RượU

5 Simple Techniques For in tem rượu

Thermionic guns comprise a filament, both fabricated from a sharply bent tungsten wire or a ceramic crystal (e.g., LaB6 or CeB6) crystal fabricated with a sharp point at the end. Current is handed with the filament to warmth the suggestion and emit electrons.Tùy vào nhu cầu sử dụng của bạn mà lựa chọn chất liệu tem nhãn mác,

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