单词	pendulum theory
释义	pendulum theory 钟摆理论
随便看	mechanical hand time release mechanical hardening Mechanical-hardening mechanical hardware system design mechanical harvest mechanical-harvest mechanical harvester mechanical harvesting mechanical hatchcover mechanical haulage mechanical hay press baler mechanical hay press-baler mechanical hazard mechanical heading machine mechanical hearing aid mechanical heart mechanical heart lung system mechanical heart-lung system Mechanical heart valve mechanical heart valve prostheses implantation Mechanical heart valves mechanical heat energy Mechanical Height Computer Mechanical Help mechanical hemolysis due to artificial valve