premium [futures]是什么意思

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The exploration and utilization of a new mining methed, downward access stoping method filled with highwater,are introduced briefly under the considerably complex geological conditions with joints and faults The sequence of stoping is also explained briefly as well as its valuatio

本文简要介绍了焦家金矿在该矿体地质条件复杂多变、节理构造极为发育的条件下 ,探讨和应用新的充填采矿方法——下向进路高水充填采矿法来有效地进行回采作业 ,同时简要介绍了该充填采矿法的工艺 ,并对其作了简要评

Corn of high moisture content(moisture content 15.

对房式仓储存的高水分玉米(水分为15。

A multifunctional machine was tested to ventilate and lower moisture content of high moisture content (14%～16%) corn in warehouse without the ducts on or under the ground,without the fixed ventilation equipment.

利用粮仓绿色多功能处理机对无地上笼或地槽等固定式通风设备的老结构房式仓储存的高水分玉米进行就仓通风降水处理 ,结合臭氧防霉技术工艺 ,达到安全降低粮食水分 ,充分提高粮食保管质量的目的。

Study on preparation of juice calcium with high water solubility from egg shell;

鸡蛋壳制备高水溶性果汁钙的研究

Plane numerical analysis of mechanical behaviors of lining structure under high hydraulic pressure in mountain tunnel;

山岭隧道高水压下衬砌结构平面数值分析

Basic characteristics of overlying strata with abundant longitudinal joints under loose aquifer with high hydraulic pressure were introduced in this paper.

介绍了高水压松散含水层及原生纵向裂隙发育覆岩的基本特征,分析阐述了在该类特殊地质采矿条件下采煤时所发生的异常突水乃至淹没矿井等异常灾害及其原因,探讨了防治该类灾害的技术途径。