详细说明
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2?￠?é°′1ú?ò±ê×???×÷;
3?￠?¨à??￡???é50-?é2000(1???mm)
4?￠í?í??￡???é50-?é1000;
5?￠èY?÷?￡???é4000x12000;
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??ó-?ú?°à′?Y1??￠??á÷?￠?￠ì??￠o?×÷ ??3??a???t??
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