What feature is common to all microscopes, and how is this feature related in the word "microscope"?

This is what i found “in a gas turbine engine, the combustor or combustion chamber is fed high pressure air by the compression system. early gas turbine engines used a single chamber known as a can type combustor. today three main configurations exist: can, annular and cannular (also referred to as can-annular tubo-annular).” i hope this you for what your looking for. can you plz mark me brainliest?

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /

Ithink it’s cancer risk