Main Engine Cutoff主机切断 Meetings Community (website)会议社区(网站) Muon-Electron ConversionMuon-Electron转换 McDonald Equipment Company麦当劳设备的公司 Magnetospheric Eternally Collapsing Object (alternative to a black hole)磁层物体(选择永远崩塌黑洞) Modern Engineering Company, Inc.现代工程公司,公司 Major Command Equipment Control Officer主要的指挥控制官员 Main Engine Cut Off主机剪除