This is a PB with the opener in hospital fees management system.
这是一个用PB开打的医院收费管理系统。
PB design to structured electronic medical records for reference, make a suggestion!
PB设计地结构化电子病历，供大家参考，提提意见！
Presence of Rn, U and Pb in environment is a ubiquitous hazard to human health.
环境中的氡、铀和铅等有害微最元素严重危害人类健康。
Presence of Rn, U and Pb in environment is a ubiquitous hazard to human health.
环境中的氡、铀和铅等有害微最元素严重危害人类健康。
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