bimetal strip-type fixed temperature detector
Pneumatic strip-type indicator 气动条形指示仪 bimetal strip-type fixed temperature detector 双金属定温火灾探测器 bimetal strip-type rate-of-rise detector 双金属差温火灾探测器 ..
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fixed temperature detector using timetable strips
双金属定温火灾探测器
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