以异丙醇-水溶液为研究物系，引入空气对垂直管内流动相变强化传热进行了实验研究。
The heat transfer enhancement of the mixtures of isopropyl alcohol and water inside vertical tube was experimented in the presence of air.
引气剂——使混凝土拌合物在拌和过程中引入空气而形成大量微小、封闭而稳定气泡的外加剂。
Air entraining agent can lead into air to produce lots of little and stable bubbles in the process of mixing concrete and other mixture.
为了解决这一问题，引入空气体积率作为粉土压实的辅助控制标准，并建议提高现行路堤的压实度控制标准。
In order to solve this problem, volume ratio of air is used as an assistant criterion for the compaction of silt.
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