The characteristics of PP-R pipe was introduced, the application of PP-R pipe in water supply pipeline system of buildings and several problems to be noted were described.是什么意思_The characteristics of PP-R pipe was introduced, the application of PP-R pipe in water supply pipeline system of buildings and several problems to be noted were described.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句