本文对国外工程起重机市场进行了详细的分析；
The market of construction crane in foreign countries is analyzed.
工程起重机液压系统漏油按部位可分为：元件泄漏和管路泄漏两种。
Oil leakage in hydraulic systems of construction cranes may be divided according to their locations into two kinds: hydraulic components leakage and piping leakage.
徐重工程起重机已形成从8吨至100吨汽车起重机， 25 吨到200吨全路面起重机，35吨至150吨履带起重机的饱满型谱；
Xu re-engineering has become a crane from 8 to 100 tons Truck Crane, 25 tons to 200 tons of crane-wide road, 35 to 150 tons cranes of full-spectrum;
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