middle or small boilers 中小型锅炉
medium and small boilers 中小型锅炉
small-sized boilers 小型锅炉
small and middle boilers 中小型锅炉
The structure function and characters for rotary spray granite dust catcher is introduced, which has a broad prospects in the area of controlling soot of medium - small boilers.
介绍了旋流喷雾花岗岩除尘装置的结构性能和特点，及其具有在中小锅炉上使用的广阔前景。
The field retrofitting results show that the combination of cold tests with numerical calculations has prosperous application in retrofitting or renewing medium and small boilers.
现场改造结果显示，运用数值计算和模化实验相结合的方法对锅炉进行改造，具有广阔的应用前景。
In order to protect environment, nowadays many large and medium-sized cities in China have forbidden the use of small coal-fired boilers, which is a blow to most of bath centers.
出于环境保护要求，目前我国许多大、中城市已明令禁止使用小吨位的燃煤锅炉，这对于大多数洗浴中心来说，是一个不小的打击。
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