1、ICS 65.20.40 B 61?:DB46?DB 46/T 4562018?2018-04-02?2018-06-01?DB46/T 4562018 I?GB/T 1.12009?DB46/T 4562018 1?1?2?GB 6000?GB 15569?GB/T 26907-2011?3?GB/T 269072011?3.1?2 cm?3.2?12?3.3?13?24?3.4?5 cm?3.5?DB46/T 4562018 2 4?4.1?98.0%?7 cm?10 cm?14 cm?15 cm?4.2?1?cm?45 30?45?55 45?55?cm?0.40 0.30?0.40?0
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