Thickness of wear layer 耐磨层厚度
As a resul t, nacre thickness is sometimes just a cosmetic layer t hat can wear thin over time.
所以真珠质的厚度就像脸上化妆品，不久就会磨薄了。
Wear resistant floor is the most economical and practical ground protection measures, but it can only be cast in concrete production, cast-in-place layer thickness requires more than 5cm.
耐磨地坪是目前最经济实用的地面防护措施，但它只能在现浇混凝土上制作，现浇层的厚度需要5 cm以上。
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