Drawing (do not mix it with painting) is a particular type of visual art, stemming back to prehistoric times with their rock and cave drawings.
绘图(不要与绘画混为一谈)是一种特殊的视觉艺术类型，可追溯至史前时期的岩画或洞穴壁画。
As for ore drawn by hand or rock loader, the ore drawing quantity of each chute shall be kept uniform to ensure the flatness of working face of stope.
人工出矿或装岩机出矿方式，各出矿穿必须均匀出矿，保证采场工作面平整。
The paper approached the subject of the application of draw theory which utilizes the movement rule of caved rock to control ore-drawing under overlying rock.
本文就利用崩落矿石移动规律进行覆盖岩下放矿控制这一放矿理论的应用课题进行了探讨。
Drawing on rock is distributed mainly over the mountain rock of dry-grassland and desert-grassland area in north-China.
我国岩画主要分布在北方干旱荒漠草原区。
It is concluded that location of foot-wall drawing points are closely related to orebody dip, cut-off grade and ore grade of wall rock.
认为下盘放矿点位置与矿体倾角、放矿截止品位、围岩含矿品位有着密切的关系。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
The stochastic medium theory of ore-drawing can properly reflect the movements of ore and rock masses for caving system.
随机介质理论可以很好地反映崩落法放矿的矿岩移动规律。
According to this cutoff grade, the paper has calculated the ratio of ore and rock while cutoff drawing that provide science foundation for the drawing of Xiaoguanzhuang iron mine.
据此计算了截止放矿时的矿岩比，为小官庄矿放矿提供了科学依据。
According to this cutoff grade, the paper has calculated the ratio of ore and rock while cutoff drawing that provide science fo...
据此计算了截止放矿时的矿岩比，为小官庄矿放矿提供了科学依据。
According to this cutoff grade, the paper has calculated the ratio of ore and rock while cutoff drawing that provide science fo...
据此计算了截止放矿时的矿岩比，为小官庄矿放矿提供了科学依据。
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