We give the structures of a cyclic code over ringR = F2 ＋ uF2 ＋ u^2F2 = {0, 1,u, u^2,v, v^2,uv, v^3},where u^3 = 0, of odd length and its dual code. For the cyclic code, necessary and sufficient conditions for the e...We give the structures of a cyclic code over ringR = F2 ＋ uF2 ＋ u^2F2 = {0, 1,u, u^2,v, v^2,uv, v^3},where u^3 = 0, of odd length and its dual code. For the cyclic code, necessary and sufficient conditions for the existence of self-dual code are provided.展开更多
在理论计算基础上，于90 kA制氟电流条件下做了最佳投料气固比试验。理论计算结果表明，气固比优化后，立式氟化反应器正常工作时的F2过剩量为1.04％～3.39％。试验结果表明，250 kg U/h立式氟化反应器可长期稳定运行于气固比205～210 A...在理论计算基础上，于90 kA制氟电流条件下做了最佳投料气固比试验。理论计算结果表明，气固比优化后，立式氟化反应器正常工作时的F2过剩量为1.04％～3.39％。试验结果表明，250 kg U/h立式氟化反应器可长期稳定运行于气固比205～210 A· h/kg下，立式氟化反应器投料气固比控制范围由前期生产确定的200～220 A · h/kg优化为205～210 A· h/kg。投料气固比优化后，F2利用效率提高1％以上，成渣率下降20％以上。展开更多
文摘We give the structures of a cyclic code over ringR = F2 ＋ uF2 ＋ u^2F2 = {0, 1,u, u^2,v, v^2,uv, v^3},where u^3 = 0, of odd length and its dual code. For the cyclic code, necessary and sufficient conditions for the existence of self-dual code are provided.
