Plastics piping systems for buried and above-ground drainage and sewerage under pressure - Unplasticized poly (vinyl chloride) (PVC-U) - Part 1: specifications for piping components and the system.

地下和地上排水和排污用塑料压力管道系统。未增塑聚氯乙烯(PVC - U)。第1部分：管道件和系统规范。

youdao

It is beneficial to reduce production costs and improve product quality for plastics processing enterprises to take wet ground sericite as a new sort of reinforcing filler.

将湿磨绢云母粉作为一种新的增强填料应用在聚氯乙烯中，有利于塑料加工企业降低生产成本和提高产品质量。

youdao

It's going to go straight into a hole in the ground, because the hard plastics that make up things like the big six pint milk bottles have some value.

BBC