Grammar-As的用法 ■3、用作关系代词或者关系副词引导定语从句 Pulse-code modulation is such as the samples are quantized into discrete steps As indicated earlier in Chapter 2, Fundamental concepts in electrical and electronics engineering, standard circuit theory can neither be used at RF nor particularly at microwave frequencies 上海海学信息工程学院上海海事大学信息工程学院 Grammar-As的用法 ◼ 3、用作关系代词或者关系副词引导定语从句 ◼ Pulse-code modulation is such as the samples are quantized into discrete steps. ◼ As indicated earlier in Chapter 2, Fundamental concepts in electrical and electronics engineering, standard circuit theory can neither be used at RF nor particularly at microwave frequencies