3) Although information originates from a single source, there may be more than one destination, depending upon how many receive stations are linked to the channel and how much energy the transmitted signal possesses.虽然信息产生于一个信息源,但 送达的目的地却可能不止一个,这往往取决于连接信道接收站的数量 和已发送信号所拥有的能量高低。 注释:连词 Although引导的是让步状语从句;该句的主句是 ethere may be more than one destination;其中短语 more than表示“不 止”,“多于”;现在分词短语用作伴随状语,介词upon的宾语是由 how many和 how much引导的宾语从句构成的。 4) It really consists of two sim plex channels, a forward channel and a reverse channel, inking the same points.其实全双工通道是 由两条单工信道构成的,其中一条是正向通道,一条是反向通道,它 们的连接点相同。 注释:主语此指代“全双工通道”;名词短语 a forward channel and a reverse channel是宾语 two simplex channels的同位语;现在分词 短语 lin king the same points是伴随状语 2021/2/20 SPaY End2021/2/20 P.4 3）Although information originates from a single source, there may be more than one destination, depending upon how many receive stations are linked to the channel and how much energy the transmitted signal possesses. 虽然信息产生于一个信息源，但 送达的目的地却可能不止一个，这往往取决于连接信道接收站的数量 和已发送信号所拥有的能量高低。 注释：连词Although引导的是让步状语从句；该句的主句是there may be more than one destination；其中短语more than表示“不 止”，“多于”；现在分词短语用作伴随状语，介词upon的宾语是由 how many 和how much引导的宾语从句构成的。 4）It really consists of two simplex channels, a forward channel and a reverse channel, linking the same points. 其实全双工通道是 由两条单工信道构成的，其中一条是正向通道，一条是反向通道，它 们的连接点相同。 注释：主语It指代“全双工通道”；名词短语a forward channel and a reverse channel是宾语two simplex channels的同位语；现在分词 短语linking the same points是伴随状语。 End