A sequential fuel injection is a type of multi-port fuel injection system in which each injection valve will open just before the cylinder intake valve opens. So in essence, the individual injectors work by themselves because they are fired individually.
Dissolve definition, to make a solution of, as by mixing with a liquid; pass into solution: to dissolve salt in water. See more.
A substance that dissolves in solution to conduct an electrical current is an electrolyte or, less commonly, an ionogen.