首要要求 meaning in English

primary requirement

It is in this sense that revealing and following the values educational rules of young people under the market economy is not only the primary request of scientific moral education in colleges and universities but the basal issues for the modern society to explore moral development
正是在这个意义上，揭示并遵循市场经济条件下青少年价值观教育的规律，不仅是高校德育科学化的首要要求，而且是现代社会探求德育发展的基础课题。
Thus the safe and reliable operation of the aeroengine , which supplies the major motive power to the modern aircraft , plays undoubtedly the first important role in this field ; and accordingly the status inspection of the aero - engine operation and the fault diagnosis technology have become the research focuses during the recent years
安全是现代航空工业尤其是民航运输工业的首要要求，而作为现代飞行器的动力核心，航空发动机的安全、可靠运行则是重中之重，因此，航空发动机运行状态监测与故障诊断技术也就成为当今的研究热点。