在预设的温度水平，双金属元件进行切换。
At the preset temperature level the bimetal element is switching.
双金属元件是一种最简单和最常见的传感器。
The bimetal element is the simplest and most often encountered sensor.
脱扣装置包括牵引杆、热元件、双金属元件、磁系统、锁扣及跳扣。
A tripping device comprises a traction rod, a thermoelement, a bimetallic element, a magnetic system, a lock catch, and a jump pin.
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