印度巴布·内斯·瓦尔一位妇女正准备用石杵研磨红色的矿物颜料。
A woman in Bhubaneswar, India, prepares to grind red mineral pigment on a stone pestle.
石、墨设备坯材对石墨设备使用性能有重大影响，本文对此作了探讨，并提出改进国产石墨设备用石墨坯材的途径。
The great effect of graphite quality on the performance of graphite equipment was discussed, and the ways for improving graphite blank used in domestic graphite equipment were put forward.
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