filter powdered
滤粉
以上为机器翻译结果，长、整句建议使用 人工翻译 。
So the LEDs found in current household applications are blue diodes daubed with a powdered coating called a phosphor, which includes rare-earth elements that filter blue light.
所以，现在家用的LED是将蓝色的发光二极管的外壁涂上粉末状的磷，其中含有的稀土元素可以把蓝光过滤掉。
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