The level ofpermeabilityof each cigarette paper was also examined using a PPM1000M paper porosity device (Cerulean, Milton-Keynes, UK) using the vacuum method.
With the calculation and measuring experiment methods, the effect ofvacuum chamber materials magnetic permeability on field distribution in a dipole magnet is discussed.
通过计算机模拟计算与实验相结合，讨论了真空盒磁导率对二极磁铁磁场分布的影响。
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This paper presents a new method in which the coating layer is absorbed by low vacuum for determining the permeabilityof coating used in casting.