1) difficulty score
难度分数
2) the degree of difficulty of separation
分离难度系数
1.
And the degree of difficulty of separation ( q u) was used to correlate the parameters for ternary systems.
考察了恒回流比分批精馏过程中各种设计参数对回流比的影响 ,并用分离难度系数关联了各参数 ,研究中权衡了生产中的操作费用和设备投资 ,结果表明 :分批精馏设计中适宜的分离难度系数应介于 0 。
3) difficulty coefficient
难度系数
1.
A study of mode for evaluating difficulty coefficient in root canal therapy;
根管治疗难度系数评估模式探讨
2.
Foundation and realization of mathematics model for difficulty coefficient of test questions;
试题难度系数确定数学模型的建立与实现
3.
Dynamic optimization model about difficulty coefficient and discrimination of exam questions in questions pool;
一种海量题库难度系数和区分度动态优化模型
4) coefficient of difficulty
难度系数
1.
Through establishing hierarchical framework model,and determining the coefficient of difficulty and weight vector,integrated scores of different water supply modes were derived to select the economical and reasonable water supply mode.
依据目前高层建筑各种供水方式的特点,应用层次分析法的基本原理,建立了层次分析参数化随机模型,通过构建层次结构模型,确定难度系数和权重向量,得出各种供水方式的综合得分,选择出比较经济、合理的供水方式。
2.
By using theory of Probability and Statistic, this paper conclud a formula to calculate coefficient of difficulty: D(x)=0 1Φ -1 (x *)+0.
本文运用概率统计的理论导出难度系数的计算公式 :D (x) =0 。
5) difficulty function
难度函数
1.
According to the theory of extenics and decision science, difficulty function is established with the aid of matter-element model of problem, and key objective of problem is given.
应用可拓学和决策科学的有关理论，借助问题的物元模型，建立了难度函数和问题核心目的，在此基础上，给出关键策略的基本概念及性质。
6) difficulty index
难度指数
1.
On the basis of the frame and procedure designed by Shao & Yu(2008) of the prior CTA of mathematics problem difficulty,this study introduced two new indicators:base difficulty(BD) and solution difficulty(SD) and then went on to a third indicator—difficulty index(DI)—to represent the relative difficulty of a problem or that between two or more problems.
本研究在邵志芳等设计的对试题难度进行事前评定的框架和实施程序的基础上,将试题的事前难度细分为基准难度和解决难度,并由此演化出难度指数来描述试题及试题间的相对难度。
补充资料：难度
难度：是说题目的难易程度，常用受测者答对或通过每个项目的人数百分比作为难度的指标，在下面的公式中， P 越大难度越低， P 越小难度越高 P=R/N*100% 其中 P: 难度； N: 总受测人数； R: 答对或通过人数
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