The actual land use planning didn't lucubrate into the sustainable land use deeply, thus it was placed into an embarrassed condition facing the issues of environment.

对土地可持续利用研究的不够深入,使得我国现行土地利用规划在面临区环问题常常处于地。

With the lucubrate research of fault mechanism, according to the domino theory and ICAO, to bring forward the idea of electric power system fault chain.

在深入研究电力系统连锁故障机理的基础上,依据骨牌论和国际民航组织(ICAO)防止事故手册上提出的“事故链”概念,提出了“电力系统事故链”的思想。