The distance of each two wind is equal, or inner wide outer narrow to form the style of inner sparse outer dense bit by bit.
覆铜箔线圈每匝之间的间隔距离是等距离的，或每匝之间的间隔距离为内宽外窄，循序渐进形成内疏外密状；
The distance of each two wind is equal, or inner wide outer narrow to form the style of inner sparse outer dense bit by bit.
覆铜箔线圈每匝之间的间隔距离是等距离的，或每匝之间的间隔距离为内宽外窄，循序渐进形成内疏外密状；
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