2937| 8
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現(xiàn)在很少見(jiàn)用槽輪棘輪的,,被步進(jìn)電機(jī)取代了,? |
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點(diǎn)評(píng)
分割器不算能替代吧,,太貴
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點(diǎn)評(píng)
難道槽輪在淹沒(méi)在歷史的車輪下?
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