合理确定隧道顶板厚度是一项重要的研究课题。
How to determine reasonable subsea tunnel rock cover thickness is still an intractable research subject.
由于缺乏防振橡胶制品的疲劳失效标准，因此，如何确定防振橡胶强化疲劳试验的参数就成为新的研究课题。
It is a new problem how to make sure these parameters to intensive fatigue experiments due to the lack of the standards of fatigue failures for the rubber materials.
考虑到模糊模型与实际对象之间的误差，研究不确定模糊模型的模糊采样控制器的设计问题，也是一个很有挑战性的研究课题。
Considering the modeling error between fuzzy model and practical plant, it is a challenging issue to design fuzzy sampled-data controller for uncertain fuzzy systems.
如何准确地确定在电压稳定性等复杂约束条件下的系统输电能力，成为了当今电力系统界所面临的急待解决的研究课题。
How to calculate the power system transmission capability in complicated voltage stability constraint conditions exactly becomes a desirable study problem in the power system nowadays.
然而在实际控制系统中，被控对象往往具有非线性、时变性和不确定性，因此，关于非线性预测控制的研究已成为控制工程界的重要研究课题。
However, most processes in industry are nonlinear, time-variant and bear uncertainty, thus research on nonlinear predictive control has become an important issue in control field.
如何在不确定条件下提高开发产品的成功率已成为重要的研究课题，本文也将尝试就此问题展开研究。
How to increase the probability of success in such development program is an attractive study issue, and the relevant study will be carried out in this paper.
本文首先通过研究品牌资产和品牌资产评估的相关知识和特征、特性，确定本研究课题进行品牌资产价值评估的数据源，即企业资产负债表和利润表。
Firstly, brand equity and brand equity evaluation is well studied and enterprise balance sheet and income statement are introduced as the data source of brand equity evaluation.
本文首先通过研究品牌资产和品牌资产评估的相关知识和特征、特性，确定本研究课题进行品牌资产价值评估的数据源，即企业资产负债表和利润表。
Firstly, brand equity and brand equity evaluation is well studied and enterprise balance sheet and income statement are introduced as the data source of brand equity evaluation.
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