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汉语拼音：pín huà

1.核反应堆运行时燃料组件或燃料混合物中裂变原子数的百分比减小。

2.使之萎缩、退化或贫乏的过程，或萎缩、退化或贫乏的性质或状态。

1. 在采出的矿石中，有用矿物含量比在矿体中的含量低，叫做“贫化”。是由于开采过程中矿石与废石相混等原因造成的。

• The ore dilution rate depends on the ore drawing parameters.

  矿石贫化率取决于放矿参数.

• No obvious iron deletion was observed in the alloy beneath the internal oxidation region.

  内氧化区前沿的合金中未发现铁的贫化.

• Higher dilution and loss rates will result in waste of resources and restriction of economic benefit.

  矿石的贫化率与损失率较高,是造成资源浪费和制约企业经济效益的突出问题.

• Low dilution drawing can raise the ore grade of drawing and reduce the mixed waste rock.

  低贫化放矿提高出矿品位,降低废石混入.

• In Chimashan Copper Mine, the orebody is mid - thick androck mass in the hanging - wall is moderately stable.

  赤马山铜矿系中厚以上矿体,上盘中等稳固.采用浅眼留矿法开采时,贫化损失大,采矿强度低,难以适应当前生产要求.