| LEC | Local Exchange Carrier | 本地交换运营商,本地电话公司。 |
| LEC | LAN Emulation Client | 局域网仿真客户机 |
| LEC | Local Exchange Carrier (telephony) | 本地交换运营商(电话) |
| LEC | Law Enforcement Committee | 执法委员会 |
| LEC | Lockheed Electronics Company | 洛克希德电子公司 |
| LEC | Learner's Edge Consulting | 学习者的边缘咨询 |
| LEC | Launch Escape Control | 启动逃生控制 |
| LEC | Language Engineering Company (translation software) | 语言工程公司(翻译软件) |
| LEC | LANTCOM ELINT Center | LANTCOM ELINT中心 |
| LEC | Levelised Electricity Costs (power plants) | 平准电力成本(发电厂) |
| LEC | Laboratory Emergency Coordinator | 实验室应急协调员 |
| LEC | Library Executive Committee | 图书馆执行委员会 |
| LEC | Lake Erie College | 伊利湖学院 |
| LEC | Lunar Equipment Conveyor | 月球设备运输车 |
| LEC | Landmark Education Corporation | Landmark教育公司 |
| LEC | Link Edit Control | 链接编辑控件 |
| LEC | Lumped Element Circulator | 集总元件环行器 |
| LEC | Lodge Executive Committee Meeting (Order of the Arrow, Tamegonit Lodge 147, Heart of America Council, Boy Scouts of Amer | Lodge执行委员会会议(箭令,Tamegonit Lodge 147,美国心脏理事会,Amer童子军 |
| LEC | Language Engineering Company, LLC (Belmont, Massachusetts) | 语言工程公司(马萨诸塞州贝尔蒙特) |
| LEC | Leading Edge Consulting, LLC | 前沿咨询有限责任公司 |
| LEC | Liquid Encapsulation Czochralski | 液体封装直拉法 |
| LEC | Local Engineering Change | 局部工程变更 |
| LEC | leukoencephalitis | 白质脑炎 |
| LEC | liquid elution chromatography | 液体洗脱色谱法 |
| LEC | ligand exchange chromatograpy | 配体交换色谱法 |
| LEC | Landmark Education Center | 地标教育中心 |
| LEC | Local Emergency Controls | 本地紧急控制 |
| LEC | Local Exchange Company | 本地交换公司 |
| LEC | Law Enforcement Center | 执法中心 |
| LEC | Large Enterprise Company | 大型企业公司 |
| LEC | Long Evans Cinnamon (rat species) | Long Evans肉桂(鼠种) |
| LEC | Local Emergency Coordinator | 当地应急协调员 |
| LEC | Layered Error Correction | 分层纠错 |
| LEC | Liquid Encapsulated Czochralski Method (semiconductors) | 液体封装直拉法(半导体) |
| LEC | Light Earth Construction (building) | 轻质土结构(建筑) |
| LEC | Lens Epithelial Cell (ophthalmology) | 晶状体上皮细胞(眼科) |
| LEC | Local Employment Committee | 地方就业委员会 |
| LEC | LucasArts Entertainment Company LLC (computer game company) | LucasArts娱乐有限责任公司(电脑游戏公司) |
| LEC | Liberia Electricity Corporation (Liberia) | 利比里亚电力公司(利比里亚) |
| LEC | Locally Employed Civilian | 当地雇用的文职人员 |
| LEC | London Euston Crewe (UK engineers line reference) | 伦敦Euston Crewe(英国工程师线路参考) |
| LEC | Line Echo Cancellation | 线路回声消除 |
| LEC | Local Exchange Companies | 本地交易所公司 |
| LEC | LAMPS Element Coordinator | LAMPS要素协调员 |
| LEC | Liquid Encapsulated Czochralsky (crystal growth method) | 液体封装直拉法(晶体生长法) |
| LEC | Livestock Equipment Council | 牲畜设备委员会 |
| LEC | Low Emissions Combustion | 低排放燃烧 |
| LEC | Law Enforcement Command | 执法指挥部 |
| LEC | Logical Equivalence Check (engineering, electronics, design automation, formal verification) | 逻辑等效性检查(工程、电子、设计自动化、正式验证) |
| LEC | Least Economic Countries | 最不经济国家 |