用偏振全息术可以在一张全息图上获得多种干涉条纹.Different interference fringes can be obtained by using polarization holography.阐明了环形光栅光学扫描全息术的基本原理,并给出了实验结果.The principle of the circular grating optical scanning holography and the experimental ...
The physical properties of rubber accelerator 2 - mercapto benzothiazole and main methods for its preparation are introduced.介绍橡胶硫化促进剂 2- 巯基苯并噻唑的物理性质和主要的制备方法.He eased his foot off the accelerator.他松开了油门。Today many radioi...
He wiped his forehead with a blue bandanna and smiled again.他用一条蓝色的大手帕擦擦前额,又笑了笑.The policeman smiled at her. "Pretty dog."— "Oh well, thank you."警察冲她笑了笑，“这狗真漂亮。”——“哦，谢谢。”He didn't speak much, he just smiled with tha...