substandard goods短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 副品 The content of metals in several different substandard goods terephthalic acid PTAare determined by inductively coupled plasma- atomic emission spectrometry ICP- AES with a microwave digestion method. 采用微波消解法处理样品，用电感耦合等离子体原子发射光谱 ICP- AES测定了几种不同级别的副品对苯二甲酸 PTA的金属含量。 dictall Why is there no end of stories of counterfeit and substandard goods? 为什么假冒伪劣的产品在中国层出不穷？ yeeyan