The fine structure of natural alkali feldspar selected from the basalt in the Hannuoba district, China was investigated by means of high resolution electron microscopy(HREM).
利用高分辨电子显微镜观察了产于河北汉诺坝玄武岩中碱性长石的精细结构。
In 1963, China began to develop and produce high-purity graphite with fine structure.
1963年中国开始研制和生产高纯细结构石墨。
In 1963, China began to develop and produce high-purity graphite with fine structure.
1963年中国开始研制和生产高纯细结构石墨。
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