数据库 数据库管理系统及其实现技术 释文 update propagation 更新传播
- hydrogen dispenser
- hydrogen distribution
- hydrogen economy
- hydrogen electric generation
- hydrogen-electric generation
- hydrogen electrode
- hydrogen embrittlement
- hydrogen emission region
- hydrogen energy
- hydrogen energy pipeline transportation
- hydrogen engine
- hydrogeneration
- hydrogenerator
- hydro-generator parts
- hydrogen evolution reaction
- hydrogen explosion
- hydrogen filling station
- hydrogen flame ionization detector
- hydrogen flocculus
- hydrogen fluoride
- hydrogen fuel
- hydrogenfuel cell
- hydrogen gas explosion limits
- hydrogen gas flammability limits
- hydrogen gas recovery technology