![]() Low-voltage switchgear and controlgear—Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines 低压开关设备和控制设备 第8部分:旋转电机用装入式热保护(PTC)控制单元 |
![]() Finned built-in heat pipe for all-glass evacuated solar collector tubes 全玻璃真空太阳集热管内置式带翅片的金属热管 |
![]() Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection(PTC) for rotating electrical machines 低压开关设备和控制设备 第8部分:旋转电机用装入式热保护(PTC)控制单元 |
![]() Dimensions and output series for rotating electrical machines--Part 3:Samll built-in motors--Flange numbers BF10 to BF50 旋转电机尺寸和输出功率等级 第3部分:小功率装入式电动机 凸缘号BF10~BF50 |
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