6452| 20
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關(guān)于起重機(jī)結(jié)構(gòu),兩種方案,征求意見(jiàn) |
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點(diǎn)評(píng)
當(dāng)然,這前提又是單工字鋼抗彎不夠,2T的電葫蘆其實(shí)一個(gè)工字鋼就夠了,我們車間5T的電葫蘆才用這么大的
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