Down-doped solid core in honeycomb fibers can guide light by PBG effects,and its leakage losses have been analyzed by multipole method.
芯区向下掺杂的实心蜂窝形光子晶体光纤可以通过光子带隙限制(PBG)导光,本文采用多极方法研究了这种实心PBG光子晶体光纤的泄漏损耗,研究表明在气孔直径与气孔周期的比为0。
In the process of PVC low foaming solid sheet extrusion molding,it is critical to control the folw and foaming of the molten polymer.
在PVC低发泡实心板挤出成型中,控制聚合物熔体的流动和发泡是保证产品质量的关键,重点介绍了生产工艺和原理,并分析了生产中的技术要点,提出了解决的办法。
The Domex700MC HSLA steel was welded by the CO2 arc welding process with flux-cored wire and the CO2 arc welding process with solid wire.
分别采用药芯焊丝CO2气体保护焊和实心焊丝CO2气体保护焊对Domex700MC低合金高强度钢进行焊接。