The present situation and existing problems in China aero propulsion technology research have been introduced.
分析了我国航空动力技术预先研究的现状及存在的问题。
The methods, present research situation, existing problems, and application foreground of multidimensional reconstruction of ultrasonic heart images are discussed in the present paper.
讨论了超声心脏图像多维重建的方法、研究现状、存在的问题及应用前景。
At beginning, it analyses the real estate's current situation of performance management. Then, it describes the Jingtai real estate company's existing problems and made a analytical research.
首先从房地产行业的绩效管理现状分析出发，详细描述了景泰房地产公司绩效管理现状并对存在问题进行细致分析。
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