The detection concept for large diameter beam parallelism with penta prism is introduced.
介绍了用五棱镜法检测大口径光束平行度的原理。
The methods for selecting penta prism and reducing the effect of surface profile error on detection are introduced.
介绍了选择五棱镜的方法和减小面形误差影响的方法。
VOLVO PENTA is devoted to the production of diesel engines for power generation with complete specifications to meet the requirements of different clients.
VOLVOPENTA专注于发电用柴油发动机的，规格完备，可以满足不同用户需求。
VOLVO PENTA is devoted to the production of diesel engines for power generation with complete specifications to meet the requirements of different clients.
VOLVOPENTA专注于发电用柴油发动机的，规格完备，可以满足不同用户需求。
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