短語詞組短語single e pipe heating system 單管供熱系統(tǒng)vertical single -pipe series-loop heating system 垂直單管順序式供暖系統(tǒng)Single pipe district heating system 單區(qū)域供熱系統(tǒng)single pipe distrit heating system 單管區(qū)域供熱系統(tǒng)single -pipe series-loop heating system 單管順序式采暖系統(tǒng)single pipe cross -over heating system 單管跨越式供暖系統(tǒng) 返回 single pipe heating system