The paper introduced the effect and principium of Sagtital focusing double crystal monochromator , and described measurement for positon of facula from Sagtital focusing double crystal monochromator.
简要介绍了弧矢聚焦双晶单色器的作用及基本原理，描述了离线测量弧矢聚焦双晶单色器出射光斑位置的方法。
In this paper, the vibration mechanic at model for a no-base, V-type positon air compressor is deduced, some elementary problems of design and calculation of damping system are expounded.
本文导出了无基础V型活塞式空气压缩机振动的力学模型，阐述了减振系统设计计算的基本问题。
This paper introduced the rule of selecting the type of flying shears, driving system, cutting positon and electromotors;
介绍了在切头飞剪设计中，飞剪型式、传动系统、剪切位置、电动机的选择原则；
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