Manual Transfer Switch 手动切换开关
manual transfer device 手动传递装置
manual transfer pump 手摇唧送泵
Manual transfer of reserves 准备金的人工转帐
manual transfer or selector device 手动转换或选择元件
manual call-back transfer 手动転送
technology transfer manual 技术转让手册
manual of heat transfer 传热学手册
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