During low temperature treatment of the H_ type resin, graphite microlites were evolved mainly in the two_ dimensional planar structure. Only under higher temperatures, the planar graphite microlites began to adjust one after another to form three_ dimensional vertically ordered microlites. H型树脂在低温碳化处理条件下,主要是在二维平面结构上演变成石墨微晶,只有碳化处理温度较高时,平面结构的石墨微晶才相互调整,形成纵向平行有序的微晶体;
This paper discuss how to measure and calculate when a parallel light doesn't incide grating vertically in measuring grating constant and how to adjust a parallel light to incide grating vertically. 本文讨论光栅常数测量中,平行光不垂直入射光栅时如何对测量值的影响及如何调节平行光垂直入射光栅。
For this specific substructure type, we study and design a hydraulic system which can raise and lay down derrick overall and adjust the height of drilling platform vertically based on the whole arrangement of drilling rig and structural characteristics of the derrick and substructure. 针对这种具体的底座类型,本文依据钻机的总体布置情况和井架、底座的结构特点,研究设计了整体起放井架和垂直调节底座钻台高度的液压系统。