“反变量”的概念、定义、翻译、参考文献-科学参考

单词	反变量
释义	反变量 Mathematics contravariant反变量，反变式；反变变换；反变的^†
随便看	health policy research health-preservation theory health production health professional Health-Promoting Lifestyle Profile health promotion health promotion by physical activity/exercise health promotion model health protection of EMU driver and attendant health protection on Qinghai-Tibet Railway health psychology health qigong health related quality of life Health resource allocation method health revenue collection health risk assessment health risk assessment for site health risk assessment of EMF health risk factors appraisal health safety and environment management system health savings accounts health security system Health Service health service cost health service demand function

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。