filamentary transister
丝状阴极
filamentary cathode【电子】
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相关词条
die for smoothing filamentary material
filamentary
securing the filamentary material to coil formers, web-roll cores
web-roll core with arrangement for securing the ends of filamentary material
filamentary superconductor【低温】
webs, tapes, filamentary material
REELS for storing filamentary material