推拉自走式支架法 push and pull system: 連桿系統(tǒng)push pull system: 推挽方式push-pull amplification system: 推挽放大方式push-pull osmotic system: 推挽試滲透系統(tǒng)push-pull system: 推挽系統(tǒng); 推挽制下載手機詞典可隨時隨地查詞查翻譯