natural age自然年龄
naturaladj.自然的;天然的;私生的
natural chronic Keshan disease自然慢型克山病
natural colour animal hair rug天然色动物毛地毯
natural antibactenial immunity天然抗菌免疫
Natural boundary of a function函数的自然边界
natural ecological circulation自然生态循环
natural drinking mineral water天然饮用矿泉水
natural language expert system自然语言专家系统
natural language symbol string[计] 自然语言符号串
natural capital stock accounts自然资本存量帐户
Natural gamma spectrum logging自然伽马能谱测井