检查气缸上前后磁簧开关的位置。
Check the position of the rear and front magnetic reed switches on the cylinder.
液位开关主要由磁簧开关和浮子组成，浮子内有磁性材料。
Level switch mainly composed of reed switch box float, float within the magnetic material.
液位开关主要由磁簧开关和浮子组成，浮子内有磁性材料。
Level switch mainly composed of reed switch box float, float within the magnetic material.
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