修复当联赛要求时业余俱乐部的座位数扩建.Fixed seating expansions for non - professional clubs when requested by the league.根据座位数, 抽签等候区足足有500多人.According to the number of seats, drawing a full waiting area more than 500 people....
单支红色发光二极管表示电源已接通。A single red LED shows that the power is switched on.按这种方式使用的二极管叫做整流管.A diode used in this manner is called a rectifier.二极管早已作为常规器件应用于多种电路中.The diode is used routinely in many kinds of electronic circuit...