the dual-purpose type gas heater 两用型燃气热水器
It also serves the dual purpose of providing the MIME type when a file's content is being sent to the browser.
它还有一个作用，那就是在将文件内容发送给浏览器时提供MIME类型。
This paper introduces the unique dual purpose rotary type car dumper system, the NO. 1 and 2 car dumper system of Qinhuangdao harbor project.
以秦皇岛1期1、2号翻车机卸车系统设计为例，介绍一种目前国际上独有的2用翻车机卸车系统。
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