利用放射性同位素示踪技术，研究14 C 菲在“植物火山石营养液空气”封闭系统中的迁移转化。

The transportation and transformation of 14 C phenanthrene in a closed 'plant lava nutrient solution air' chamber system was studied by using radioactivity technology.

youdao

采用示踪技术研究乳化液膜的稳定性。

A tracer technique was used to study the stability of liquid surfactant membrane.

youdao

该方法以示踪粒子势能为参量，以液相平均势能的二分之一为阈值，通过示踪粒子的势能分布判定非液相空间。

This method adopts the ghost particle potential as identification parameter and the half of the average liquid potential as threshold value.

youdao