As the liquid film has self restorability, the utility model not only can ensure safety, but also can be continuously used for a long term.
由于液膜具有自身修复能力，所以本实用新型既保证安全，又能长期连续使用。
As the liquid film has self restorability, the utility model not only can ensure safety, but also can be continuously used for a long term.
由于液膜具有自身修复能力，所以本实用新型既保证安全，又能长期连续使用。
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