1. The theoretical foundation of the covariance is pertinence of system theory. 协变性的理论基础是系统原理中的相关性。
2. The paper brings forward pertinence control measures for the main stage risk and the transmission risk. 本文对主要的阶段性风险和传递性风险，提出了针对性的控制措施。
3. Physical Education is the education to the body as well as to the physical fitness and this special education needs practicability and pertinence. 体育是指对“身体”的教育，是对身体健康的教育，这种特殊的教育必须力求实用性和针对性。
英英解释
n.
1. relevance by virtue of being applicable to the matter at hand
网络释义
pertinence 针对性;
适当;
相关;
恰当;
pertinence pertinency 适切;
有关性;
针对性;
pertinence relation 相关关系;
pertinence pertinency relativity 相关性;
Pertinence Marketing For Shanghai Telecom Base On Data-Mining 上一篇论文： 基于数据挖掘的上海电信商业客户针对性营销;
