之后又广泛应用于发动机、起重机等普通机械中。
Next, it is widely applied to engines, lifters etc. in common machinery.
戴尔起重机是机身和发动机机械师，机械师，考官指定，商业飞行员和飞行教官。
Dale Crane was an airframe and powerplant mechanic, a designated mechanic-examiner, a commercial pilot, and a flight instructor.
戴尔起重机是机身和发动机机械师，机械师，考官指定，商业飞行员和飞行教官。
Dale Crane was an airframe and powerplant mechanic, a designated mechanic-examiner, a commercial pilot, and a flight instructor.
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