fundamental principle

Some theories related to particle scatterance and the structure as well as the fundamental principle of the facilities for testing laser signal from multiple angles have been introduced.

介绍了粒子散射相关理论以及激光粒子信号多测装置的构成与基本原理,并详细描述了对烟与干扰气胶粒子的多散射特征进行采集、处理和分析的过程。

It appears to me the worst instrument of arbitrary power, the most destructive of English liberty and the fundamental principles of law, that ever was found in an English lawbook.

来，这是一本英国法律档案里所能找到的表明专制权力的最坏的文件。