四分地球水三分,滋润万物助繁生, 成冰化汽因温变,出溪入海为势增。 农耕时代多清净,工业浊流使脏浑, 任凭污染勤渗透,欲饮一杯或不能。 Without water in this beautiful land, man cannot survive purely with sand. Rice seeks a healthy means to grow; farmers need hum
The ranks of cyclic and negacyclic codes over the finite chain ring R as well as their minimal generating sets are defined, and then the expression forms we pre