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- 复Duffing系统complex Duffing's system
- 复Duffing振子complex Duffing oscillator
- Duffing系统Duffing system
- 耦合Duffing系统coupled Duffing system
- 时滞状态反馈下Duffing系统动力学研究Dynamics of Duffing Systems under Delayed State Feedback Control
- 含三次耦合项的两自由度Duffing系统的共振及混沌行为Resonance and Chaos Behavior in a Two-Degree-of-Freedom Duffing System with Cubic Coupled Terms
- 简谐与随机噪声联合激励下Van der Pol-Duffing系统的响应Response of Van der Pol-Duffing Oscillator to Combined Excitation of Harmonic and Ran dom Inputs
- 免疫系统immunologic system
- 复盘discs
- 他已完全复元。He was completely restored.
- 排水系统drainage system
- 他的突然复元使医生大为惊奇。His sudden rally surprised the doctor.
- 泌尿系统urinary system
- 请即办理并航空函复。Please act promptly and let us have your reply by return airmail.
- 报警系统panalarm
- 门禁系统gate control system
- 运输系统belt line
- 安全系统security system
- 帮助系统help system
- 制动系统braking system
