substernal

substernal的英语例句

1. The substituent is deuterium.

   取代基是重氢.

2. The effect of the substituent number and position on second order nonlinear - optical coefficients � � was studied.

   研究了取代基数目及取代基位置对非线性光学效应的影响.

3. The fluorescence intensity of porphyrin also relates to the substituent positions on the phenyl groups.

   此外,荧光强度还与卟啉的苯环上取代基的取代位置有关.