7379| 20
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關(guān)于起重機結(jié)構(gòu),兩種方案,征求意見 |
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點評
當(dāng)然,這前提又是單工字鋼抗彎不夠,2T的電葫蘆其實一個工字鋼就夠了,我們車間5T的電葫蘆才用這么大的
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