The most frequent break downs of hydraulic press hydraulic system have been introduced with principle analysis and solution.
介绍了液压机液压系统通常易出现的故障,并作了原理分析,提出了排除方法。
The analysis of ups and downs of Iridium Satellite system's business plans testifies the validity and maneuverability of business platform model.
用商业平台模型解析铱星系统商业计划的沉浮,证明了它的有效性和可操作性。
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