DictionaryForumContacts

   English
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to phrases
guard relay
el. 保护继电器
tech. 防护继电器; 保持继电器; 保安继电器; 防护〔保安〕继电器
 English thesaurus
guard relay
tech. LOR (MichaelBurov); L.O.R. (MichaelBurov)
guard relay: 1 phrase in 1 subject
Electric machinery1