Art electronic dtrimeter for dead-stop redox titradons is here described. The circuit consists of a pentode D. C. amplifier and a cathode-ray tuning indicator.

介紹了一種用電子管線路的極化滴定儀的裝置和使用毛片免费精品99，其靈敏度和極化電壓均可調(diào)節(jié)。

This may be overcome, as suggested in the present investiga- tion by assuming that the vicinal actions are due to the interactions of various chemical bonds in the molecule with the chromophoric electron.

指出旋光度應由分子中各化學鍵毛片视频在线播放，而不是分子中各原子對於生色團電子的微擾作用來計算欧美性爱免费三级片视频，兩者的主要不同點在於是否考慮鍵的多極矩。