Conclusion Marrow iron-stain is one of simple and safe methods of differential diagnosis on iron-deficiency anemia and chromic diseases anemia.

结论：骨髓铁染色是鉴别诊断缺铁性血和慢性疾病性贫血简单易行的方法。

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The design of mechanical parts, such as draw poles press poles, simple su stain girders and protruding models type parts may be optimized by use of metal gradient materials.

论述了采用金属梯度性能材料优化拉杆类、压杆类、简支梁类、凸模类机械零件设计问题。

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