其次，本文在实证材料的支撑上比较薄弱，缺乏更新的、更全面的实证分析成果。
Next, this article lacks the real diagnosis material's support, lacks the renewal and the more comprehensive empirical analysis achievement.
房价与地价关系是目前研究较多的一个问题，但大多数是建立在概念分析的基础上，缺乏实证研究。
Presently, the topic on relations between housing and land price is studied more and more, but the majority was based on conceptual analysis, short of empirical study.
开展人力资本复合实物期权评价方法研究的主要困难在于缺乏必要的实证分析支撑环境。
The mainly problem of the study on the evaluation of human capital by the evaluation method of the compound real option is the experience study.
经梳理研究发现，以上研究目前还停留在浅层的实证研究和描述性分析阶段，缺乏全面深入的理论探究，未能揭示出信任的发生机理和作用机制等。
However, it is found that the studies remain the superficial phase of positive research and descriptive analysis, and they fail to reveal the development mechanism of trust.
经梳理研究发现，以上研究目前还停留在浅层的实证研究和描述性分析阶段，缺乏全面深入的理论探究，未能揭示出信任的发生机理和作用机制等。
However, it is found that the studies remain the superficial phase of positive research and descriptive analysis, and they fail to reveal the development mechanism of trust.
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