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99484794:制冷的話,波段不一樣,選材就不一樣,冷光闌靠后,光學(xué)結(jié)構(gòu)完全不一樣了, m4^VlE,`Dh 長(zhǎng)波就做長(zhǎng)波的,你F/#至少得1.4以內(nèi),一般是1.0 (2017-09-01 17:25) hVdGxT]6
靦腆的蘿卜傘:請(qǐng)教一下,為什么長(zhǎng)波的設(shè)計(jì)F數(shù)普遍偏小,1.0或者1.0以下 (2023-03-14 10:51) =OR&,xt
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