Ammonium nitrate (an) propellant used in missile's gas generator is studied for making it having a low burning temperature, clear gas and a larger adjusting rage of burning rate.
为使用于导弹燃气发生器的推进剂的燃温低、燃气清洁、燃速调节范围大，对硝酸铵(AN)推进剂进行了研究。
W-shaped flame boiler, with its own high-temperature and long-flame characteristics, is suitable for burning low volatile anthracite fuel.
型火焰锅炉具有炉膛温度高、火焰行程长等特点，适于燃烧无烟煤等低挥发分燃料。
In order to lower the cost of porcelain production, we should make full use of native raw materials with low price and quality, reduce the temperature of burning and shorten the time of burning.
余筱勤，王建干，吕淑珍，低温快烧瓷质地砖的研制为降低生产成本，人们应该充分利用本地劣质廉价原料，降低陶瓷烧成温度，缩短烧成时间。
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