balanced-draft control的意思|示意

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负压调节

负压调节 ... balanced-draft control 负压调节 Fully Balanced Control Surfaces 全面均衡控制面 balanced control valve 平衡型调节阀 ...

引风调节 ... 引发反应|initiation reaction 引风调节|balanced-draft control 引割求全法|completion by cuts ...