To increase the weight of the substrate, its inner emptiness can be filled by any hard material, for example, is filled with concrete.
To increase the weight of the substrate, its inner emptiness can be filled by any hard material, for example, is filled with concrete.
user
Для збільшення маси основи, її внутрішня порожнина може бути заповнена будь-яким важким матеріалом, наприклад, залита бетоном.
assistant