The performance of the prototype adopting PPN electronic injection system has been trial-tested.
对采用PPN电喷系统的样机性能进行了探索性试验。
Objective: To evaluate the effect of parietal parenteral nutrition (PPN) in critically ill surgical patients.
目的研究外周静脉营养支持对外科危重病人的治疗效果。
Objective:To observe whether partial parenteral nutrition(PPN)is helpful to improve the cure rate of severe neonatal patients.
目的：观察给予部分静脉营养（PPN）是否有助于提高危重新生儿的治愈率。
The photoelectron spectroscopic spectra (PES) of two important atmospheric pollutants, peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN), are reported.
给出了两个重要的大气污染化合物PAN和PPN的紫外光电子能谱（PES） 。
Objectives: To evaluate the effect of partial parenteral nutrition (PPN) with fat emulsion on liver function and energy metabolism in patients with liver cirrhosis.
目的：探讨糖脂双能源部分肠外营养(PPN)对肝硬化肝功能及能量代谢的影响。
Objective The purpose of this study was to research the effect of the electrical stimulation of the pedunculopontine nucleus(PPN) on the neuronal activities of the subthalamic nucleus(STN) in rats.
目的研究电刺激大鼠脚桥核（PPN）对丘脑底核（STN）神经元放电的影响，探索高频刺激STN改善运动不能的机制，为临床高频刺激PPN治疗帕金森氏病提供电生理学依据。
Objective The purpose of this study was to research the effect of the electrical stimulation of the pedunculopontine nucleus(PPN) on the neuronal activities of the subthalamic nucleus(STN) in rats.
目的研究电刺激大鼠脚桥核（PPN）对丘脑底核（STN）神经元放电的影响，探索高频刺激STN改善运动不能的机制，为临床高频刺激PPN治疗帕金森氏病提供电生理学依据。
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