1) extra narrow vein
极薄矿脉
1.
The application of shrinkage method in the stoping of extra narrow vein of rock gold mine;
留矿采矿法在岩金矿山极薄矿脉中的应用
2.
By carrying on rock drilling and ore digging respectively, conducting rock and ore blasting separately and engaging rock and ore removal indePently from each other in the mining of extra narrow vein of Er-Dao-Gou Gold Mine, the grade of Produced ore was improved and so did the economic benefit.
二道沟金矿在极薄矿脉探矿时,采用矿岩分凿、分爆、分出办法,提高了副产矿石品位,为企业多创经济效益。
2) steeply-inclined narrow vein
急倾斜极薄矿脉
1.
Short-hole shrinkage method is commonly employed in mining steeply-inclined narrow vein.
对于急倾斜极薄矿脉的开采国内外最常用的采矿方法是浅孔留矿法,实践表明,该法存在人工劳动强度大、矿石贫化率高等缺点。
3) gently inclined and very thin ore vein
缓倾斜极薄矿脉
1.
In consideration of the technological mining conditions of the gently inclined and very thin ore vein of Jingshan Gold Mine,blasting parameters were optimized by the orthogonal test.
针对金山金矿阳山矿段的开采技术条件,利用正交试验方法,对缓倾斜极薄矿脉开采进行了爆破参数优化的试验研究,其结果对缓倾斜极薄矿脉的开采具有重要意义。
4) gentle dip narrow ore extra-narrow vein
缓倾斜薄和极薄矿脉
5) gently-dipping and inclined seam
缓倾斜-倾斜极薄矿脉
6) extra narrow gold vein of inclination (then turned to steep inclination)
倾斜转急倾斜极薄矿脉
1.
Optimization and experiment of the mining methods for extra narrow gold vein of inclination (then turned to steep inclination);
倾斜转急倾斜极薄矿脉在岩金矿山和有色金属矿山具有一定的普遍性 ,选择合理的采矿方法和回采工艺 ,是保证其开采经济效益和充分回收有限资源的根本前提。
补充资料：“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小，但磁动性很强，可使局部磁场波动增强，促使氢质子弛豫加快，从而使T1和T2缩短，这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子，所以其离子往往具有PEDDPRE，可用来作顺磁性对比剂，如钆(Gd)。Gd在外层有7个不成对电子，具有很强的顺磁性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条