initial day meaning in English

起算日

But , accede oneself initial day rises more than 20 years , must not again to lodge a complaint
但是，自继续开始之日起超过二十年的，不得再提起诉讼。
Fmp was defined as the initial day of the last menstrual period preceding 12 consecutive months of amenorrhea , identified retrospectively
Fmp的定义为经回顾性分析，自末次月经第一天始连续12个月闭经。
Firstly , the demand analyses in the initial days of exploder were discussed in this part . secondly , the article introduced collectivity designing project of system which concluding the running environment and the interface and structure and the database
首先介绍了系统开发初期的需求分析；其次，介绍了系统的总体设计方案，其中包括系统的运行环境、接口设计、结构设计以及部分数据库的设计。