An information recommendation method is provided for a terminal. Thus, this design could solve the problems occurring in the conventional stacked machine tools; such as the deformation or the displacement of the sever axis or the rotation axis caused by the upper-layer machine tools. The second pivot includes a protrusion for propping up the stopper of the flexible member as the top module rotates around the second pivot by a predetermined angle to maintain the predetermined angle between the top module and the bottom module. A biological indicator is located at least partially in communication with the interior compartment, wherein the biological indicator provides at least one indication of biological content within the interior compartment after the medical sterilization container and cover are subjected to a sterilization process.