The fourth part mainly adopts the examples designed in the sixth part, which are aimed at the teaching and learning experiments of the two educational functions of the explorative physical experiment.
第四部分是，主要采用本论文第六部分设计的案例，针对探索性物理实验的上述两大教育功能开展教学实验。
The physical simulation experiments of natural gas hydrate(NGH) production by depressurizing in sand-packed porous media were carried out using a new type of apparatus self-designed.
使用自制的一维天然气水合物开采模拟实验装置，对天然气水合物降压开采进行了物理模拟实验研究，考察了降压幅度、降压速度对开采效果的影响。
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