两相半开式重力热管和两相半开式热动力热管可提高安全性与经济性。
The entrance courtyard with a guided semi-open space can be seen as the prelude of the architecture to invite visitors.入口院落作为进入建筑的序曲,为一个两面围合的具有引导性的半开敞空间,欢迎着来客到访。
This calculation result provides design basis for the establishment of stock pump with semi-open and fewer blades impeller.该计算结果为建立少叶片半开式叶轮纸浆泵的设计方法提供了理论依据。