离子阀器件 ionic valve: 离子管离子整流器fast ionic conductor and device: 快离子导体及其应用multilayer ionic device: 多层离子装置rotary valve device for exhaust valve: 排气阀转阀机构rotary valve device for inlet valve: 进气阀转阀机构下载手机词典可随时随地查词查翻译