natural law自然法则naturaladj.自然的；天然的；私生的Natural forest resource protection engineering天然林保护工程Natural Environment and Sustainable Development自然环境与可持续发展Natural Progesterone for Osteoporosis Prevention天然黄体酮预防骨质疏松症Natural campylobacter control with bacteriophage利用噬菌体自然控制弯曲杆菌Natural course of primary hepatocellularcarcinoma原发性肝癌的自然病程观察naturalism philosophy and spiritualism philosophy自然主义哲学与精神主义哲学Natural Macromolecule Modified Cationic Flocculant天然高分子改性阳离子絮凝剂natural electric field frequency-selection method天然电场选频法Natural Accelerated Environmental Test Technologies自然环境加速试验技术naturalnon-equidistance and staggered grid analysis腔内自然对流换热