The hydraulic jack generally by this aircraft (main engine), the dynamic system and the hydraulic control system three parts is composed.
液压千斤顶一般由本机(主机)、动力系统及液压控制系统三部分组成。
Jack Ma, founder of China's search engine Alibaba, is also a key speaker.
中国电商巨头阿里巴巴的创始者马云也是其中一个重要的发言者。
Jack Ma, founder of China's search engine Alibaba, is also a key speaker.
中国电商巨头阿里巴巴的创始者马云也是其中一个重要的发言者。
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