unsuperseded造句

例句与造句

1. mineral admixtures have unsuperseded advantages in improving the workability and durability of self-compacting concrete . the reasons of tendency of cracking in self-compacting concrete and the influence factors have been studied, and the new type of mineral admixture has been used in high performance self-compacting concrete, and its defects such as high slump-losing and shrinking or cracking is successfully prevented
   分析了免振捣混凝土容易产生收缩开裂的原因及其影响因素，将研制的新型矿物添加剂应用于免振捣高性能混凝土之中，解决了免振捣混凝土坍落度经时损失大、易产生收缩开裂等技术难题，配制出免振捣微膨胀高性能混凝土。
2. It's difficult to find unsuperseded in a sentence. 用unsuperseded造句挺难的