1. Objective To observe the effect of underground part-obturated environment on human health. 目的观察半密闭地下环境对健康的影响。
2. The results showed that the effects of soil oxytetracycline pollution on the underground part were greater than on the above-ground part of rice. 结果表明，土霉素污染对水稻地下部分的影响明显大于地上部分。
3. By using the close relationship of the tree's underground part and upper part, a simulation method of gravity's effect on the tree shape was established. 同时将树的地下部分与地上部分有机地结合在一起，模拟了基于重力场的三维树形态。
4. The content of essential oil of underground part was significantly higher than that of the aerial part and extraction rate of ultrasonic-assisted extraction method was higher. 地下部分挥发油含量明显高于地上部分，且超声辅助浸提法提取率更高。
5. Staying the decrease of the polysaccharide content of underground part and the total flavonoids content of aboveground part, increased polysaccharide and total flavonoids content in harvest. 延缓地下部分多糖和地上部分总黄酮含量的降低，增加其收获期多糖和总黄酮含量。
