“Flux” in Japanese
Short answer
フラックス
furakkusu
Flux in Japanese is “フラックス” (furakkusu). Full meaning: flux; flux (used in soldering, smelting, etc.); solvent.
Other ways to say “Flux” in Japanese
融剤
yuuzai flux (substance mixed with a solid in order to lower its melting point), fusing agent
流束
ryuusoku flux
ブラッグス
buraggusu flux; flux (used in soldering, smelting, etc.); solvent
フラッグス
furaggusu flux; flux (used in soldering, smelting, etc.); solvent
ブラックス
burakkusu flux; flux (used in soldering, smelting, etc.); solvent
溶剤
youzai solvent, solution, flux; hot charge
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