... 缓冲溶液 Common pH Buffer Solutions 常用的基准物质 Common Primary Standards 常用掩蔽剂 Common Masking Agents ...
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common primary standards
通用初级标准
以上为机器翻译结果，长、整句建议使用 人工翻译 。
With the new National English Curriculum Standards (NECS) for Full-time Compulsory Education and Common Senior Middle School issued in 2001, English course is offered and popularized at primary stage.
随着2001年新《英语课程标准》（实验稿）（全日制义务教育）的颁布实施，英语课程在小学阶段全面普及。
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