fixing agent

例句：

1. 1. The chemical used in this product is a fixing agent that helps the paint adhere to the surface.
   该产品中使用的化学制剂是一种固化剂，有助于油漆与表面粘合。
2. 2. In construction, a fixing agent is often used to ensure that materials are properly bonded together.
   在建筑中，固化剂通常用于确保材料适当地粘合在一起。
3. 3. The engineer used a special fixing agent to strengthen the concrete structure before it was poured.
   工程师使用了一种特殊的固化剂来加强混凝土结构，然后再进行浇筑。