In the light of CMM characteristics, the electrically controlled gas mixer is applied to make internal combustion engine suitable for CMM power generation to realize a breakthrough in CMM utilization.
瓦斯发电机组针对煤矿瓦斯的特点，应用电控燃气混合器等技术，使内燃机应用于煤矿瓦斯发电，实现瓦斯利用的重大突破。
Paper analyzed formation and characteristics of light sierozem in Ningxia, put forwards existing problems during developmental sierozem, and discussed ways of its amelioration and utilization.
在分析了宁夏淡灰钙土现状的基础上，阐述了淡灰钙土开发利用中存在的问题，探讨了改良利用的途径。
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