a paucity of natural resources是什么意思

用法例句

Lack of Microelements to the Effcts of Children s Health;

微量元素的缺乏对儿童健康的影响

The clinical research for the infants with hemorrhage of lacked vitamin K;

婴儿维生素K缺乏出血症临床研究

Recessive hunger due to lack of micronutrients is ubiquitous in the diet of our country s residents.

我国居民膳食中普遍存在微营养素缺乏的隐性饥饿 ,本文介绍主要微营养素的作用 ,其缺乏对人体健康的影响及预防微营养素缺乏的措施。

Studies on the gene defect of Hereditary deficiency of factor V;

遗传性因子V缺乏症的基因研究

Research on chronic energy deficiency symptom and its protection theory;

慢性能量缺乏症防护理论研究

Histopathological observation of vitamin C deficiency in juvenile Cyprinus carpio var.Jian;

幼建鲤维生素C缺乏的病理组织学观察