·2,447,543篇论文数据，部分数据来源于NoteExpress
A research for main is to creative policy in technique in primitive in enterprise environment obstacle factor.
第四章主要是对我国企业原始技术创新政策环境障碍分析与对策研究。
However, before 1994, per farming capita income obstacle had been relatively serious and thus taken as the main obstacle factor.
在1994年之前，农民人均收入障碍度较大，是主要的障碍因素。
The soil obstacle factor, the critical values of some nutrients and the supply intensity, as well as fertilizer efficiency should be paid more attention in formula fertilization by soil testing.
测土配方施肥中，还应注意：土壤障碍因子、某种元素临界法与供应强度，肥料利用率等问题。
应用推荐