The principle and an experiment device are introduced by which the measurement of the relative concentration of lotion is carried out continuously with the doublebeamsystem of laser.
采用双光路激光系统，对清洗液的相对浓度进行了连续测量，给出了测定原理和实验装置。
2
At last, the feasibility of fabricating light guide plate by doublebeam laser direct writing system is confirmed.
最后论证用双光束激光直写系统制作亚微米光栅型导光板的可行性。
3
This paper introduces the necessity of doublebeam splitting system applicating in polarization interference phase subdivision and the optimized principle of this beam splitting system.