免费人成视频19674不收费

    <tbody id="ofkqm"><pre id="ofkqm"></pre></tbody>

    1. <dd id="ofkqm"><noscript id="ofkqm"></noscript></dd>

        1. <dd id="ofkqm"><noscript id="ofkqm"><video id="ofkqm"></video></noscript></dd>
        2. Home > Maintenance Area > TURBINE
          how to check the performance of the steam seal rings automatically adjust the gap?

          The spring must not be too hard, generally by hand can push the steam seal block, let go your hand and can automatically recover quickly into place, and pay attention to check concessions gap steam seal block should be large enough, can not be less than the design predetermined value.

          Favourite