Material: By imports the pure silica gel or the import medical high polymer composition material is made. Structure: By the drive pipe, the pressure-regulating valve or the attachment are composed.是什么意思_Material: By imports the pure silica gel or the import medical high polymer composition material is made. Structure: By the drive pipe, the pressure-regulating valve or the attachment are composed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句