1) problems and difficuties
疑难因素
2) difficult factor
困难因素
1.
On difficult factors and essential techniques in English listening course for English majors in the first and second years;
英语专业基础阶段听力课教学中的困难因素与对策
3) factors of difficulties
难点因素
4) Factors that leading to difficulty of blood pressure control
难控因素
5) difficulty
[英]['dɪfɪkəlti] [美]['dɪfəkəltɪ]
疑难
1.
Therefore, it is meaningful, both in theory and practice, toresearch its difficulty for cognizing invasion and applying law.
因此，认真研究其中的疑难问题，对正确认定本罪、适用法律既有理论意义更有实践指导意义。
6) complex gas zone
疑难气层
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条