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中国建筑东北设计研究院研制的DY型高精度20kN预应力张拉机,于一九九六年八月二十三日通过了由沈阳市科委、沈阳市建委共同组织的技术鉴定,对该张拉机给予很高的评价。专家们一致认为该张拉机张拉力大,测力精度高,且可随意调定张拉力大小,自带计力表,无须经常校检张拉力。该张拉机在测力技术原理和适用范围广度上有重大突破,技术水平属国内领先。
The DY high-precision 20kN prestressing tension machine developed by China Architecture Northeast Design and Research Institute passed the technical appraisal jointly organized by the Shenyang City Science and Technology Commission and the Shenyang City Construction Committee on August 23, 1996. The tension machine gave a high rating. The experts all agreed that the tensioning machine has a large tensile force and a high measuring force accuracy, and it can freely set the tensile force. It has its own force meter and does not need to regularly check the tensile force. The tensioning machine has a major breakthrough in the principle of force measurement technology and the breadth of its scope of application. The technical level is leading in China.