volume extraction ratio
矿床总体积和采空区总体积之比
In short, though the overall effect is positive, there are losers as well as winners.
简而言之，尽管总体影响比较积极，总还是有赢家和输家。
The ratio of the volume of all the pores in a material to the volume of the whole.
孔隙率一材料中孔隙的总体积与整个材料的体积之间的比率
Benefits such as fuel and energy savings plus lower total emission volumes are realized when air is enriched or replaced with higher-purity oxygen.
使空气变成富氧空气或用高纯度氧替代空气有节约燃料和能量以及更小的总发射体积等好处。
The natural reserves should cover around 10% of the territory of the city.
自然保护区总面积占全市国土面积比例达到10%。
Figure 16-20 shows the good correlation observed between the magnetic field and the gold values over a muck-covered placer in this area.
图16-20表明了此地区腐殖土覆盖下砂积矿床上面的磁场和含金量之间的良好对比关系。
the structures after sedimenting control the space location of ore storage sandbody,thesupplying source of copper element and the forming of ore bodies;
沉积后的构造决定了储矿砂体的空间位置、铜质来源和矿体的形成；
METHOD OF GEOPHYSICAL VOLUME FOR THE TOTAL IRON RESOURCE PROGNOSIS OF ANSHAN TYPE IN LIAONING
物探体积法在鞍山式铁矿资源总量预测中的应用
(mining) a unit of volume (equal to 6 cubic feet) used in measuring bodies of ore.
（采矿）体积单位（等于立方英尺）用于测量矿体。
On freezing the general tendency of matter is to contract.
在受冷时，物体总的趋势是体积变
Whatever the shape of a body, it is always possible to take the dimensions.
不管物体是什么形状，总可求出其体积。
ratio of gas-cap volume to oil zone volume
气顶体积-油带体积比
Measured the area percentage of the artifacts in brain stem and graded the image quality.
使用后处理软件 ,测量后颅窝脑干区伪影的面积百分比 ,并对图像总体质量进行评分。
The total volume of sediments carpeting the ocean bottom has turned out to be surprisingly small.
覆盖海底的沉积物的总体积显得惊人地微
Research on TEM Detection Technology for Water-accumlating Gob in Coal Mines
煤矿积水采空区瞬变电磁法探测技术研究
Application of Transient Electromagnetic Method in Prospecting Water-accumulated Area in Coal Mine Gob
瞬变电磁法在探测煤矿采空积水区的应用
The additional effect of TEM detection and its application in coal mined-out area with accumulated water
煤矿积水采空区瞬变电磁法探测的附加效应
Water vapor accounts for about 4% by volume in moist areas.
在气候潮湿地区，水汽按体积占（空气体积）4％左右。