单词：multi-layer welding
单词：multi-layer welding 相关文章
The Ministry of Civil Affairs has urged shelters nationwide to help the homeless in order to prevent deaths in severely cold temperatures. The ministry said that local shelter management authorities should provide 24-hour services to those in need. R
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The Ministry of Civil Affairs has urged shelters nationwide to help the homeless in order to prevent deaths in severely cold temperatures. The ministry said that local shelter management authorities should provide 24-hour services to those in need. R
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