brightening

/'braitniŋ/

现代语料频率: 35463

[机] 擦亮, 纯化

plural of brightening v make lighter or brighter v become clear

The sudden brightening of a fused globule of gold or silver, when the last film of the oxide of lead or copper leaves its surface

The brightening of a metal in the crucible when it becomes pure, as in certain refining processes.

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