1) qualitative concept
定性概念
1.
And the difficulty is uncertainty hidden in qualitative concepts, that is the randomness and fuzziness.
文章提出用云模型 3个数字特征 (期望值 ,熵 ,超熵 )来描述一个定性概念 ,用熵来关联模糊性和随机性。
3) defined concept
定义性概念
1.
The concepts are important part of intellectual skills, and teaching defined concepts are very important and critical in school education.
概念是智慧技能的重要组成部分,而定义性概念的教学则是学校教育里非常重要和关键的内容。
4) concept definition
概念界定
1.
This paper introduces the concept definition and developing situation of nanometre, and puts forward the right attitude to welcome the nano-times.
介绍了纳米的概念界定及其发展现状 ,提出了迎接纳米时代应持的正确态
2.
Moreover, we considered several problems in concept definition and methodology concerning time perspective.
并对时间洞察力的概念界定和方法学方面存在的问题进 行了反思。
5) concept definition
概念定义
1.
Concept definitions serve as the foundation of mathematics, but they do not derive directly from the objective reality and have the multiple characteristics of abstractness, generalization and simplicity, thus, it is difficult for students to recite concept definitions without omitting a single word.
概念定义是数学的基础,但概念定义不是直接来自于客观现实中,且具有抽象性、概括性、简明性等多重性,因此,学生往往难以一字不漏地背诵概念定义。
补充资料:班氏定性试验
班氏定性试验
用于检查尿糖的一种方法。班氏试剂主要为碱性的硫酸铜溶液。因葡萄糖含有醛基,在加热的碱性溶液中,能将二价铜还原为一价铜而出现红色沉淀。其方法为取蓝色的斑氏试剂1ml,置试管中,加热煮沸(试剂仍为澄清方可应用),再加尿液0.1ml(2滴)煮沸1~2分钟冷却后观察结果。用不同符号表示。正常人因摄入葡萄糖过多或因精神激动,可出现暂时性糖尿。糖尿病及肾性糖尿病人定性试验阳性。但应注意服用某些药品,如柳酸盐类,有时可出现尿糖假阳性反应。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条