带通滤光片
红外滤光片(玻璃)
红外塑料滤光片
长/短波通滤光片Satisfaction is death
As long as I have a want, I have a reason for living. Satisfaction is death.
只要有欲望，我就有生存的理由，满足视同死亡。
—萧伯纳
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