1.
To question the qualifications of(a voter) or validity of(a vote).
对（投票人的）资格或（选票的）有效性质疑
2.
The quality or property of being efficient.
效能有功效的特征或性质
3.
Influence of Dissolved Organic Matter on the Arsenic Speciation and Availability to Algae;
溶解性有机质对砷形态及藻类有效性的影响
4.
Effects of Organic Matters on the Properties and External Copper Validity of Yellow Soil
有机物料对黄壤性质及外源铜有效性的影响
5.
Some Properties and Model of the Efficient Margin in Portfolio Combinatorial Investment
组合投资有效边界的若干性质和模型
6.
Study on the efficient frontier characters of portfolio
证券组合有效前沿性质的进一步研究
7.
The Study on the Effective Teaching Strategy of Carbon Dioxide Property;
“二氧化碳性质”的有效教学策略研究
8.
Hidden Curriculum: An Effective Way in Personality Traits;
隐性课程：人格特质培养的有效途径
9.
Discussion of Enhancing Work Validity at Quality Testing Department;
关于提高质检部门工作有效性的探讨
10.
The Effectiveness of ISO9001 Management System Used in Colleges;
论高校建立ISO9001质量管理体系的有效性
11.
The Effectiveness of ISO9001 Quality Management System Used in Colleges and Universities;
论高校ISO9001质量管理体系的有效性
12.
The Validity Analysis of the Evaluation of Undergraduate Teaching Quality;
本科课堂教学质量评估的有效性分析
13.
Query and Analysis to the Validity of the Literary Criticism in the Contemporary China;
对当代中国文论有效性的质疑与分析
14.
Raising Effectiveness of Enterprise Quality Management System in Operation;
提高企业质量管理体系运行的有效性
15.
On the Effectiveness of Administrative Executive Evidence in Technical Supervision of Quality;
质量技术监督行政执法证据的有效性
16.
Improving the validity of ISO9001quality management system;
提高企业ISO9001质量管理体系的有效性
17.
The discussion on improving the validity of implementing the Quality Management System;
浅谈如何提高质量体系实施的有效性
18.
How to Assure the Effectiveness of Quality System of Construction Enterprise;
施工企业如何保证质量体系的有效性