bell type manometer

The article tries to syncretize enterprise′s Life cycle with economic cycle and innovation cycle and products cycle and enterpriser life cycle to build multisynthetic cycle curvy as bell-curvy.

文章将企业生命周期曲线与经济周期、创新周期、产品生命周期、经营者生命周期等诸多周期曲线融为一体,综合建立多重性企业生命周期钟型曲线并进行分析。

By employing the gaseous oxygen as oxidizer and gaseous hydrogen as fuel,hot-firing tests were performed for aerospike nozzle and dual-bell nozzle test engines with altitude compensating features.

采用气氧作氧化剂、气氢作燃料,对具有高度补偿特性的塞式喷管和双钟型喷管进行了点火热试。