contact preheater

• 接触预热器

contact preheater的用法和样例：

例句

1. The filament drive included a trailing weight and a preheater.
   长丝体的传动部分包括一个拖拉重锤和一个预热器。
2. By analyzing the failure cause of boiler air preheater, the measure of preventing it from failure was discussed.
   摘要通过对锅炉空气预热器失效原因的分析，提出了一些防止空气预热器失效的技术措施。