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[期刊论文] 作者:WANG Yan,ZHANG Yuanzhen,YAN Yu, 来源:武汉理工大学学报:材料科学英文版 年份:2006
避孕功效和本地人在老鼠简历完成陶器的 IUD 我们再学习。实验被划分成四个组:简历陶器的 IUD 组;不锈钢 IUDgroup;操作控制组;正常控制组。所有 IUD 样品被放进老鼠的子宫。试验...
[期刊论文] 作者:WANG Yan,ZHANG Yuanzhen,YAN Yu, 来源:武汉理工大学学报英 年份:2004
The contraceptive efficacy and local effects of bioceramic IUD in rat were studied. The experiment was divided into four groups: bioceramic IUD group; stainless...
[期刊论文] 作者:Chen Shaoxing,Zhang Yuanzhen,Wang Ning,, 来源:The Journal of Chinese Geography 年份:1990
The authors divide the 388 species of endangered plants recorded in the first volume of China Plant Red Data Book into 7 types:1.living fossils;2.ancient relics;3.species of only a small range;4.monos...
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