small and medium sized boiler
英
美
- 中小型锅炉
双语例句
- The layer burning industrial boilers discussed in this paper are mainly small and middle boilers which use chain grate as their burning device.
本文所讲的层燃式锅炉，主要是以链条炉排作为其燃烧装置的中小型锅炉。
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