选择性的

This suggests that FF has onlyperipheral -opioid agonist activity in humans.

这意味 FF 是一种外周的选择性μ－受体激动剂。

The asymmetric aldol reaction is one of the most important methods of forming carbon-carbon bonds.

不对称羟醛缩合反应是有机合成中立体选择性地形成碳碳键的最重要方法之一。

Supercritical conditions can enhance the conversion of isooctane but lower the alkene selectivity simultaneously.

超临界条件与常压相比能提高异辛烷的转化率，但同时使烯烃选择性降低。

And the mole ratio of benzene to propylene on the alkylation process have been studied.

统计了中试研究数据并进行了数学关联，获得了BPA分子筛催化剂对异丙苯、二异丙苯选择性和反应器床层温升的关联式。

Furthermore, low 〓 more pronouncely suppressed the responses of ON-OFF type amacrine cells to green flashes than those to red flashes.

同样，对于ON-OFF型无长突细胞，低钙选择性地压抑这类细胞对绿光的反应。

The key technology of the catalytic amination process of fatty alcohols is the amination catalysts with high selectivity.

催化剂的关键性能是其选择性。

The main improv ing target of the amination catalysts is to promote their selectivity.

改进脂肪醇胺化催化剂的主要目标是提高其选择性。

The selective amination of ethylene oxide to ethanolamine has become a hot spot in amination reactions in recent years.

环氧乙烷选择性胺化制乙醇胺成为近年来胺化反应的热点课题。

Adding methanol to the reaction system could enhance the conversion of HDA and the yield of HDU-M notably. So the ammonolysis was apt to the SN1 scheme.

反应体系中引入甲醇溶剂可显著提高反应的转化率及选择性，认为DMC胺解过程更倾向于按 SN1机制进行。

Studies on sequence changes in the early genomes of interspecific F_1 hybrid and amphidiploid in CucumisIn the present study,extensive genomic changes were detected in newly obtained allotetraploid of Cucumis,namely Cucumis hytivus Chen and Kirkbride,by AFLP analysis using 12 pairs of EcoR-I/Mse-I primers.

甜瓜属远缘杂种F_1及人工异源双二倍体早期基因组序列变化研究利用12对Eco RI/Mse I选择性引物，对甜瓜属人工异源双二倍体C.hytivus及其二倍体父母本进行AFLP分析，结果发现多倍体基因组在形成早期发生了广泛的序列变化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。