本论文以汉语介词中境事介词，即处所介词和时间介词为研究对象。
This paper takes the location and time prepositions as the research subject.
本论文以重庆市为例，在对其最低工资现状分析的基础上采用实证方法对最低工资争论的焦点，即最低工资就业效应做相应探讨。
This paper took Chongqing as an example, after analyzed its current situation of Minimum Wage Regime, we took an empirical study on its controversial employment effect.
在本论文中，我们即采用了离子注入方法来制备光波导，研究所制备的波导的性能，以优化制备条件。
In this thesis, ion implantation has been used to form the waveguide and the performance of the waveguide has been studied in order to obtain the optimal fabrication conditions.
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