collocation | frequency |
---|---|
billion years | 3 |
cat fleas | 3 |
nanocrystalline cellulose | 2 |
times stronger | 2 |
plant kingdom | 2 |
material produced | 2 |
nanobio building | 2 |
building blocks | 2 |
replacement parts | 2 |
human beings | 2 |
medical implants | 2 |
heart valves | 2 |
human genes | 2 |
making type | 2 |
collocation | frequency |
---|---|
nanobio building blocks | 2 |