Now, the system has been used in WS9 engine test in Xi'an Aero Engine Company.

目前本系统已经用于西安航空发动机（集团）有限公司的WS9发动机的试车工作。

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In this paper, data mining techniques were introduced to investigate the test-driving database of WS9 aero-engines.

本文结合WS9发动机试车数据库，对航空发动机试车数据库的数据挖掘技术应用作了尝试性的研究。

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