PPD

基本解释

• abbr.已付的(=postpaid)
• abbr.预付的(=prepaid)
• abbr.程序设计指示(=Program Planning Directives)

同根派生

• PPD相关词

英汉例句

• The positive tuberculin rate of PPD test had a trend of ...
  结论高校应进一步加强PPD试验的监测力度,提高PPD的监测质量。
• The effects of crude oil properties, the structure of PPD and...
  讨论了原油的性质、降凝剂的结构及试验条件对降凝效果的影响。
• Data of PPD test for freshmen in 2001-2004 were analyzed.
  结果河北省部分高校大学生接种人口数量明显增多;
• Major supplier of special cement, cement licking PPD.
  主要供应特种水泥，水泥舔加剂。
• The positive rate of PPD test was no significant difference among each year.
  各年度结核菌素阳性率差异无显著性 ;

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