How dangerous is the radioactive source lost in Vung Tau
Co-60, a lost radioactive source in Vung Tau, is an artificial radioactive isotope of Coban, which can cause cancer if exposed.Synthesis of substances that can absorb, hold, and release oxygen
In the future we may not need oxygen when we go diving, but just a mask is enough.Japan makes lithium-ion batteries do not need rare earth
Japanese scientists have successfully built lithium-ion batteries without the use of rare earth metals.