The carbon concentration distribution function derived from partial linear differential equation by applying the feasibility of repeat adding can describe the innate character of multi stage ca...
运用线性偏微分方程的可迭加性质所求得的碳浓度分布函数能够描述多段法渗碳过程的物理本质。
This paper reviews the progresses research on species, distribution in the nature, structure character and pharmacological function of the substance that show color in plants .
对植物显色物质的种类，在自然界中的分布，结构特征及药理活性等方面的研究进展进行了综述。
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