The paper introduces role and design method of improved test pushing device , and discusses its technical and economic benefits .
介绍了改进型试推装置的作用，设计方法，并就其技术经济效益进行了论述。
The paper introduces role and design method of improved test pushing device , and discusses its technical and economic benefits .
介绍了改进型试推装置的作用，设计方法，并就其技术经济效益进行了论述。
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