Horizontal layering is a prerequisite for the application of geoelectric master curves. 水平分层是应用电量板的先决条件。
The upward horizontal slice stoping and filling without intervening pillar is the main mining method in Huangshaping Pb-Zn Mine. 摘要上向水平分层充镇无间柱采矿法是黄沙坪铅锌矿的主要采矿方法。