短语词组短語low sulfur expansible graphite 低硫可膨脹石墨的superfine expansible graphite 超細可膨脹石墨micron expansible graphite 微米級可膨脹石墨Fine powder of expansible graphite 可膨脹微粉石墨sulfur -free expansible graphite 無硫可膨脹石墨 返回 expansible graphite