网络与数据通信 协议体系与组成结构 释文 service data unit, SDU 服务数据单元
- hydroelectric power planning
- hydroelectrometer
- hydroenergetic
- hydroenergy
- hydroenergy planning of hydropower station
- hydro-engineering survey
- hydroexpansivity
- hydroextracting
- hydroextraction
- hydroflap
- hydro-fluctuation belt of reservoir
- hydrofluoric
- hydrofluoric acid alkylation
- hydrofluorocarbon refrigerants
- hydrofoil
- hydrofoil craft
- hydroform
- hydro former
- hydroforming technology
- hydroformylation
- hydrofracturing
- hydrofracturing method
- hydrofranklinite
- hydrof luoric acid
- hydrogel