The exploitation study of the Bentonnite in Handan area is started in 70'S.
邯郸地区膨润土资源开发研究从70年代初开始，至今仍停留在初级加工阶段。
The exploitation study of the Bentonnite in Handan area is started in 70s. But now the study is still the phase of the primary process.
邯郸地区膨润土资源开发研究从70年代初开始，至今仍停留在初级加工阶段。
The paper states the characters of Bentonnite of each mine in Handan area, and supplies the evidence for the close process of Bentonnite in Handan area.
本文通过对邯郸地区各个矿点膨润土特征的论述，为今后邯郸地区膨润土的进一步深加工提供依据。
The paper states the characters of Bentonnite of each mine in Handan area, and supplies the evidence for the close process of Bentonnite in Handan area.
本文通过对邯郸地区各个矿点膨润土特征的论述，为今后邯郸地区膨润土的进一步深加工提供依据。
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