Therefore, the study on the effectiveness of these present bilingual teacher training approaches has important value of theory and practice to bilingual teaching experiment.
因而研究现有的这些双语师资培训途径的有效性，对于双语教学实验具有重要的理论和实践价值。
On the basis of experiment data in Fugou county, using the grey system theory and method, the paper study the increase production mechanism of vegetables power.
在扶沟县大李庄乡田间监测的基础上，运用灰色关联分析的理论与方法，探讨“菜椒增产素”增产作用机理。
It is significant to study on the experiment and basic theory about conical twin-screw extruder.
因此，深入开展锥形双螺杆挤出过程的实验研究和基础理论研究具有重要的现实意义。
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