2025-06-27 14:23 浏览次数 3
贝壳
The column (10) contains a packing solid comprised of crushed mollusk shells (20, 21) of at least one size in diameter.
圆柱(10)含有由至少具有相同直径的粉碎的软体动物贝壳(20,21)组成的填充固体。