free-swimmer,free-swimming diver是什么意思

用法例句

The preparation and film performance of the acrylate,PVDC and epoxy resin based auto-deposition coatings are described.

介绍了丙烯酸酯类、聚偏二氯乙烯(PVDC)和环氧树脂类的自泳涂料制备技术及漆膜性能,探讨了自动沉积槽液的配制和涂装工艺。

This article introduces the application circumstances of autophoresis coating to large and medium bus/coach making.

简要介绍自泳涂装工艺在大中型客车制造中的应用情况。