... position key switch 二位钥匙开关 Position limited switch 行程开关 position indicsupporting switch 阀位指示开关 ...
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"Limited service controller" on-off "switch must be in the extreme" off "position to open the enclosure door."
在打开外壳门之前，要保证开关处于“关闭”位置，否则，不能对控制装置的开关进行维护修理。
The switch position of butterfly disc is limited by the adjusting screw pole on the worm gear transmission device. The indicating device displays the position of the valve switch.
蝶板的开关位置都由蜗轮传动装置上的调节螺杆限位，指示牌指示阀的开关位置。
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