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1. The permeation tube is used to transport liquids through the skin.
渗透管用于通过皮肤输送液体。
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2. The permeation tube was designed to improve the efficiency of the process.
渗透管被设计来提高过程的效率。
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3. The permeation tube is essential for maintaining proper skin health.
渗透管对于保持适当的皮肤健康至关重要。