本文主要论述自由讨论在口语教学中的运用。
This thesis focuses on the application of brainstorming in teaching speaking.
本文主要论述预测岩溶洞穴分布位置和高程的新方法。
This paper mainly expounds a new method for predicting the distribution, especially the elevations, of karst caves.
本文主要论述运用模型试验来研究车床床身的合理结构。
The paper deals mainly with the study of rational structure of a lathe bed by model tests.
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