Iodine is one of the elements difficult to detect because of its unstablechemical characteristics.
碘的化学特征不稳定，是较难检测的元素之一。
2
Turing showed that under specific conditions of chemical reaction and diffusion, the homogeneous distribution becomes dynamically unstable and a different stable pattern emerges.
The first control method is a kind of perturbation control and can stabilize the BZ-CSTR chemical chaos to its embedded unstable periodic orbits (UPO).