[問題] 卡片有不同方向的彎曲是正常的嗎?
之前買卡的時候一直以為卡片彎曲是指從卡片的頂端來看是彎曲的,就像下列網址
http://i.imgur.com/ANkafBW.jpg

最近買方界ㄧ套且大略看了一下就直接放進櫃子,今天細看才發現從卡片的側面來看是
彎曲的,如下列網址,但從從卡片的頂端來看是平的。
http://i.imgur.com/kqQ0T80.jpg

想請問卡片有不同方向的彎曲是正常現象嗎? 還是卡片彎曲的方向是只有單一方向,
其他方向的彎曲是人為因素如拆包裝不當這樣嗎?
如果不妥,會刪掉文章的@@
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