互惠

• Permanence for asymptotically periodic lotka - volterra cooperating systems
  互惠系统的持久性
• A relationship based on reciprocity for starters
  ：对于入门者来说，应当建立基于互惠的关系。
• Double taxation relief reciprocal exemption under section 23b
  税务条例第23b 4a条互惠课税宽免
• Open source licensing , part 2 : academic v . reciprocal
  开放源码许可，第2部分:学术许可与互惠许可
• Time deposit mutual fund bundled offer
  定期存款互惠基金组合优惠
• Secretary and tea : mutual benefit in culture
  秘书与茶文化的互惠
• A sale favorable especially to the buyer ; a bargain
  互惠交易指尤对买者有利的交易；占便宜的交易
• Reciprocal exemption under s23b
  税务条例第23b 4a条互惠课税宽免
• This could be the beginning of a mutually beneficial relationship
  这可能是彼此互惠关系的开始。
• Almost periodic solution for n - species cooperation system with time delay
  种群互惠系统的概周期解