Bandpass Filter
IR Pass Filter
IR Cut FilterYou may be disappointed if you fail
You may be disappointed if you fail, but you are doomed if you don’t try.
失败了你可能会失望，但不尝试你将注定败亡。
—贝佛利•席尔丝
| Last：Raise the bar a little higher | Next：In prosperity our friends know us |
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