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                  <p class="date">2022-06-25</p>
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                  <p class="desc">螺纹环规属于一种常用量具，用于测量工件外螺纹尺寸的正确性。现有螺纹环规由环规本体所设内测量表面的测量螺纹来检测螺丝或螺杆的螺纹是否符合规格，因此，该螺纹环规的测量精度格外重要。一种可调式螺纹环规，包括...</p>
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