网络与数据通信 网络应用 释文 session initiation protocol, SIP 会话起始协议
- refractory products
- refractory ramming mix
- refractory raw material
- refractory raw materials
- refractory resource recycling
- refractoscope
- refracturing
- Refrain
- refrangibility
- refrangible
- refreezing
- refresh
- refresh circuit
- refresh cycle
- refresh of electronic records
- refresh rate
- refresh testing
- refrigerant
- refrigerant alternative and phase out
- refrigerant charging
- refrigerant compressor condensing unit
- refrigerant for vehicle air conditioner
- refrigeranting cycle
- refrigerant pipe
- refrigerant reclamation machine