Đang tải các đoạn phim…
5 đoạn
Được nói trong 5 đoạn từ 2 kênh · A2–C1
Well, inside the concrete are tiny microorganisms placed there by the concrete manufacturers.
This recognition came with no additional concrete action on the part of these countries.
A majlis cast in concrete in the walls themselves.
The wireless signals that get data to it, they're just a concrete manifestation of Maxwell's equations.
Another example -- self-repairing concrete.