5021| 21
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第一次設(shè)計(jì)氣缸,導(dǎo)軌結(jié)構(gòu)如何設(shè)計(jì)? |
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點(diǎn)評(píng)
直線軸承差不多也就10來塊錢一個(gè),整個(gè)加起來也就百來塊錢
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