oldest business in the world He said he believes "this is really a long-term trend in pushing for continued use of memory and storage." Cylinder work volume refers to the volume of gas swept by the piston from the top to the bottom, also known as single cylinder displacement, depending on the cylinder diameter and the piston stroke. Engine displacement is the total volume of working volume of each cylinder, usually expressed in milliliter (CC). Engine displacement is one of the most important structural parameters. It is more representative of engine size than cylinder diameter and cylinder number, and many indicators of engine are closely related to displacement. In just three days, the 30-year bond jumped 16 basis points, the biggest gain since December 2008.