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    纸张表面pH的测定方法

      Kett膜厚计正确的校正方式   因Kett膜厚计是利用电磁束或涡电流的变化量进行测量，而平面的工作与曲面的工作所产生的电磁束或涡电流的变化量又完全是不同的状况，因此国家体育总局体育彩票管理中心官方网站，您必须有以下的概念：   1必须使用工件的原素材进行校正国家体育总局体育彩票管理中心官方网站。  2平面的校正值与曲面的校正值是不同的国家体育总局体育彩票管理中心官方网站国家体育总局体育彩票管理中心官方网站。  3膜厚计应该测量正平面的工件与固定曲率（圆杆）的工件。因为曲率不固定时，感测的结果也会是不固定的国家体育总局体育彩票管理中心官方网站。  4小圆杆的校正值与大圆杆的校正值不相同。  5以铝合金为例，即使工件都是平面的，不同批号（组成）也

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