计算机硬件 计算机维护 释文 maintenance cost, maintenance charge 维护费用
- uncoupled modes
- uncoupled wavefunction
- uncoupling
- uncoupling agent
- uncovered
- uncovered wooden documents
- UNCSA
- UNCTAD/ICC Rules for Multimodal Transport Documents
- unctuous strangury
- uncus
- uncut book
- uncut lens
- undamped
- undamped electrical oscillation
- undamped natural frequency
- undamped oscillation
- undamped oscillator
- undamped system
- undec-
- undeca-
- undecagon
- undecahedron
- undecaprenol
- undecidability
- undecidability theorem