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NEC的翻盖手机哪有卖？

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热继电器型号怎么认还有交流接触器型号怎么认

接触器型号举例CJ20-100，cjt1—20，CJX2-6511热继电器JRS1D-25， NR2-25，JR36-20 ，TH-P12