It is mainly used as comparison test in the study process of material and structure.
主要作为材料或结构研究的测试对比测试。
Using pure black rice pigment as material, the author has made an animal nutritional test.
以纯化的黑米色素为原料，进行动物营养实验。
Why do scientists choose iron as the test material instead of other metals?
为什么科学家选择将铁作为试验材料，而不是其他金属？
Why do scientists choose iron as the test material instead of other metals?
为什么科学家选择将铁作为试验材料，而不是其他金属？
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