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内壳（56）利用可变形薄膜片形成为袋状并封入着色剂。
The inner case (56) is formed into a bag shape with a deformable film sheet and encloses a colorant.
youdao
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内壳（56）利用可变形薄膜片形成为袋状并封入着色剂。
The inner case (56) is formed into a bag shape with a deformable film sheet and encloses a colorant.
youdao