1)  Ferric iron
三价铁测定
2)  Tri_valency
三价
3)  trivalent,radical
三价基,三价根
4)  trivalent chromium
三价铬
1.
Study on Trivalent Chromium Electroplating Process in Chloride System;
氯化物体系三价铬电镀工艺研究
2.
Corrosion resistance comparison of trivalent chromium passivation film on zinc based on different zinc plating processes;
不同镀锌层的三价铬钝化膜耐蚀性能比较
5)  trivalent chrome
三价铬
1.
The effects of the components of trivalent chrome passivation bath on the appearance and corrosion resistance of the passivating film are investigated.
研究了三价铬黑色钝化液组分对钝化层外观和耐蚀性的影响。
2.
The bath compositions of trivalent chrome black passivation for zinc plating coating were optimized by orthogonal test method and the effects of operation conditions on the appearance and the corrosion resistance of the passivation film were investigated.
采用正交试验法对镀锌层三价铬黑色钝化工艺组分进行优化,研究了工艺参数对钝化膜外观和耐蚀性的影响。
3.
The bath compositions of trivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.
采用正交试验法对锌-铁合金镀层三价铬黑色钝化工艺进行优化,并研究了工艺参数对钝化膜外观和耐蚀性等影响。
6)  Cr(Ⅲ)
三价铬
1.
Cr(Ⅲ) passivation possesses as good performance as Cr(Ⅵ) passivation, but .
三价铬钝化在许多方面具有与六价铬钝化相似的性质,而毒性却只有六价铬的1%,是六价铬钝化最有可能被接受的替代品,得到了研究者的广泛关注。
2.
Different kind of Cr-free passivation,the characters and mechanism of Cr(Ⅲ)passivation was briefly introduced.
简述了镀锌板无铬钝化的各种类型以及三价铬钝化的特点与机理。
参考词条
补充资料:生物效价测定
分子式:
CAS号:

性质:利用药物对生物体(动物、离体培养的组织细胞或微生物等)的作用以测定药物效价或其生物学活性。根据药物的药理作用,在周密的实验设计下分析比较样品、标准品或对照品所引起生物反应的剂量,以测定样品的效价。《中华人民共和国药典》(1990年版)收载不能用理化方法测定的、或理化方法不能反映生物活性的药物,如洋地黄、胰岛素、肝素、绒毛膜促性腺激素、缩宫素、硫酸鱼精蛋白、各种抗生素等可用生物检测法以测定效价和控制药物质量。生物效价测定还用于测定体内含量甚微的生理活性物质、中和药及一些生化制剂等。

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