Some of those who say the city has had its day also point to economic and technical changes that seem to remove one of the most basic reasons for getting together in an urban huddle.
那些宣称城市已经日薄西山的人指出经济和技术变化已经去除了让人们挤到城市里来的一个最基本的原因。
Diode is the most basic electronic circuit, one of the most common electronic components. The independent current and voltage is it can widely important reasons.
与信息电子电路中的二极管相比，电力二极管具有怎样的结构特点才使得它具有耐受高电压电流的能力?。
Diode is the most basic electronic circuit, one of the most common electronic components. The independent current and voltage is it can widely important reasons.
与信息电子电路中的二极管相比，电力二极管具有怎样的结构特点才使得它具有耐受高电压电流的能力?。
应用推荐