1. Concrete is read as t ó ng, which means two tones. Is a synonym for concrete. In engineering design and construction, concrete is often abbreviated as concrete.
2. Concrete was created by Professor Cai Fangyin, a structuralist, in 1953. Concrete is the most commonly used word in construction engineering, but there are too many strokes, which is laborious and time-consuming to write. So Cai Fangyin, a quick thinker, boldly used artificial stone instead of concrete. Because there are 30 concrete words and only 10 artificial stone words, 20 can be saved, which greatly speeds up the speed of note taking. Later, artificial stones were used to synthesize concrete. Configuration means artificial stone, "concrete is as hard as stone", and has been popularized among college students.