XRD patterns showed that the cathode material is well-crystallized, homogeneous olivine-type phase, with only tiny trivalence iron impurities.
XRD 图谱表明，阴极材料结晶完整，为均一橄榄石型结构，仅含少量三价铁杂质。
Cost effective Quality Assurance programs for down and feather products are a challenge because the material is a natural product and very non-homogeneous.
花费有效的成本，以获得羽绒羽毛产品的品质保证程序，是一项有挑战的工作，因为这种原料是天然产品而且非常不均一。
Add more of one of the constituent elements to the material, and see whether the material remains homogeneous.
向物质中多加入某一种组分元素，看看此种物质是否还保持同质性。
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