The optical system of the flame-observingtube is discussed in detail and the result of the optical system design with a turning angle prism is given in this paper.
在本文中，对火焰观测仪的光学系统作了详细讨论，并给出带有转角棱镜的光学系统设计的结果。
2
The experiment results show that observing jet appearance with the double reflecting mirrors system is feasible as long as the vacuum of the glass tube can meet the requirement of experiment.
实验结果表明，只要有机玻璃管的真空度能够满足要求，采用双反射镜成像系统来观测射流的形貌是可行的。
3
An observing block which corresponds to the auxiliary fuse tube in position is sleeved on the fuse wire.