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Txheej txheem cej luam ntawm txoj kev loj hlob thiab cov yam ntxwv ntawm lub tshuab nqus tsev Circuit Court breaker
[Kev nthuav dav ntawm kev txhim kho thiab cov yam ntxwv ntawm lub tshuab nqus tsev vacuum breaker]: lub tshuab nqus tsev Circuit Court breaker yog hais txog lub tshuab hluav taws xob uas nws cov neeg raug kaw thiab qhib hauv lub tshuab nqus tsev.Lub tshuab nqus tsev Circuit Court breakers tau pib kawm los ntawm United Kingdom thiab United States, thiab tom qab ntawd tsim rau Nyiv ...Nyeem ntxiv