riserlystyrene riser

例句：

1. 1. The riser is an important component of the chemical process.
   起泡剂是化学工艺中的一个重要组成部分。
2. 2.The foaming agent helps to create a stable foam layer on the surface.
   泡沫剂有助于在表面形成稳定的泡沫层。
3. 3.The riser is responsible for transporting and distributing the chemicals throughout the process.
   起泡剂负责在整个过程中运输和分配化学物质。