| 1. | The substituent is deuterium .
取代基是重氢。 |
| 2. | Flett has examined a series of anthraquinones with various substituents on the ring .
福莱特测试了一系列环上具有不同取代基的蒽醌。 |
| 3. | It follow therefore that the steric blocking effects of substituents are reflected in adverse kinetic, rather than thermodynamic factors .
由此可以看出，取代基的主本阻碍反应，是反映在违背动力学因素而不是热力学因素。 |
| 4. | Electron with - drawing group
吸电子取代基 |
| 5. | Electron donating group
供电子取代基 |
| 6. | Synthesis and characterization of poly aryl ether ether ketone ketone containing bis o - methyl moiety
含甲基取代基聚芳醚醚酮酮的合成与表征 |
| 7. | Study on corrosion and inhibition mechanism in h2s aqueous solutions v . the inhibition characteristics of imidazoline derivatives in h2s solutions
取代基咪唑啉分子结构与缓蚀性能的实验研究 |
| 8. | Betemit started at shortstop for jeter and played a big role as new york improved to an albest 27 ? 11 since the all - star break
贝特密今天先发取代基特守游击在明星赛后他扮演了重要脚色协助洋基取得27胜11负成绩。 |
| 9. | In this paper , silsesquioxanes with functional organic substitutes were used as molecular template . the preparation of low dielectric films with narrow pore size distribution was discribed
本文使用具有功能取代基的笼形倍半硅氧烷作为分子模板剂，研究孔洞大小均匀分布的低介电常数多孔薄膜的制备。 |
| 10. | The nlo properties of the tmaf / pss , ttaf / pss and thaf / pss films under the nanosecond laser pulse are compared . the results show that the optical nonlinearities are weakened with the increasing of the
将tmaf / pss 、 ttaf / pss和thaf / pss薄膜的纳秒非线性结果进行比较,发现随着c60中碳笼上取代基个数的增加,光学非线性减弱。 |
