natural draught natural draft  自然通风

[natural] silk  蚕丝

~(15)N natural abundance  ~(15)N自然丰度

“the eleventh five-years′plan” of alleviating natural disasters  防震减灾十一五规划

10000 m3 natural gas spherical tank  10000m3天然气球罐

10000m^3 natural gas spherical tank  1000立方公尺天然气球罐

101 juice natural clarifying agents  101-澄清剂

15N natural abundance  1N自然丰度; 15N自然丰度

Ⅱ ZTC1+1 natural clarifying agents  Ⅱ型ZTC1+1天然澄清剂

9F natural gas unit  9F燃机

A component of natural drug  中药成分

A Discussion on Natural Science Researches  基本运动链(BKC); 试论自然科学研究

AA class natural green rice  AA级纯天然绿色水稻

AAM(AA)—natural rubber graft polymer  丙烯酰胺(丙烯酸)——天然橡胶接枝聚合物

absorber *A support project of the Heilongjiang Provincial Foundation of Natural Science  吸声体

academic journal for natural science  科技期刊

accelerated natural process  加速的自然进程

Acipenser sinensis Natural Reserve  中华鲟保护区; 阴极降压

Acoustic Natural Frequency  声学固有频率