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pH

英 美['pi 'etʃ]
  • abbr. 酸碱度符号(描述氢离子活度的)

考试真题


Jody has a Ph.D.in nutrition, but more important, she has personal experience—her mother taught her to diet when she was only eight years old.

出自-2016年6月听力原文

Jody has a Ph.D. in nutrition, but more important, she has personal experience—her mother taught her to diet when she was only eight years old.

出自-2016年6月听力原文

There are more than 600,000 professional social workers in the country, and we all either have a bachelor’s degree, a master’s degree or a Ph D in social work.

出自-2016年12月听力原文

There was a time not long ago when new science Ph.

出自-2013年12月阅读原文

Partly this is a result of how bleak the academic job market is, but there's also a rising awareness of career options that Ph

出自-2013年12月阅读原文

One critical step that could help to drive change would be to require Ph.

出自-2013年12月阅读原文

In science, graduate students and new Ph

出自-2013年12月阅读原文

What do we learn about new science Ph.

出自-2013年12月阅读原文

What does the author say about America's Ph

出自-2013年12月阅读原文