该设备填补了液压教学的空白，解决了液压原理教学的难题，用多媒体代替了传统的黑板教学。
The equipment supplies a new way of hydraulic teaching and solves the problems in hydraulic principle teaching.
该设备填补了液压教学的空白，解决了液压原理教学的难题，用多媒体代替了传统的黑板教学。
The equipment supplies a new way of hydraulic teaching and solves the problems in hydraulic principle teaching.
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