net primary production per gross primary production ratio  净初级生产比率

primary element and primary weight analysis  主成分和主分量分析

primary parametric resonance and primary resonance  主参数共振-主共振

Primary resonance and primary parametric resonance  主共振－主参数共振

21-Primary  层次分析法

21-Primary aminocorticoids  21-伯胺基皮质激素

3 primary colors theory  3原色原理

3D simulation of primary and secondary equipment  一、二次设备三维仿真

3-primary-reformer method  三一段转化工艺

4-oxadiazole (P-TTD) primary scintillator counting effecincy quenching 2-phenyl-5-(4’-biphenylyl)-1  淬灭

a primary air fan  一次风机

A Primary Research into Rural Tourism  乡村旅游初探

a primary standard facility of diffuse visual transmission density  漫透射视觉密度基准装置

A Primary Study on Lichens from Mount Yi  沂山地衣研究

a single piece of the primary PMLSM  单段初级永磁同步直线电动机

a suitable system of primary school basketball  轴承

Aberrant transcripts Abnormal expression of the FHIT gene in human primary  异常转录本

aboveground net annual primary production  地上净生产量

Aboveground net primary production  地上净初级生产力

aboveground net primary productivity  地上净初级生产力