291. 电子显微镜 Electronic Microscope
292. 电子线路 Electronic Circuit
293. 电子线路设计与测试技术 Electronic Circuit Design & Measurement Technology
294. 电子线路实验 Experiment in Electronic Circuit
295. 电子照相技术 Electronic Photographing Technology
296. 雕塑艺术欣赏 Appreciation of Sculptural Art
297. 调节装置 Regulation Equipment
298. 动态规划 Dynamic Programming
299. 动态无损检测 Dynamic Non-Destruction Measurement
300. 动态信号分析与仪器 Dynamic Signal Analysis & Apparatus
