Terms containing key problems

Subject	English	Chinese
IT	date-in-key problem	关键字日期问题
econ.	key problem	主要问题
commer.	key problem	关键问题
gen.	key problems	关键问题
sport.	key problems to be tackled	攻关课题
railw.	tackle key problem	攻关
met.	tackle key problems in science and technology	科技攻关