The composition can further comprise a virgin polyethylene terephthalate (PET), a high gas barrier or an oxygen scavenging compound.
该组合物可以进一步包含未用过的聚对苯二甲酸乙二醇酯(PET)、高阻气剂或氧清除化合物。
2
The technology and equipment of automatic stop up hole welding with argon gas protection, scavenging welding technique and welding power supply are introduced.
介绍了氩气保护自动堵孔焊技术及其所用设备、换气焊接系统、焊接电源等。
3
During the operation in chemical combination storage, air pollution will happen when the waste gas of chemical combination is scavenging.