niter

1. This gang of Huang Yan rains when the day namely becomes the niter acid rain.
   这股黄烟在天下雨时即成为硝酸雨。
2. Later, people made up black gunpowder with niter, sulfur and charcoal of certain proportions on the basis of the formula.
   后来，人们根据这个配方，将硝石、硫磺、木炭按一定比例配制在一起，制成了黑火药。
3. Since the major raw material of gunpowder niter is as white as snow, Arabians called gunpowder "Chinese Snow" and "Chinese Salt".
   因为制造火药的主要原料硝石洁白如雪，所以火药被阿拉伯人称为“中国雪”和“中国盐”。
4. Theoretically, active power niter can suppress load harmonic current effectively and it is one of the most promising methods to solve the harmonic problem.
   有源电力滤波器从原理上讲能够有效抑制负载谐波电流，是解决电力谐波问题最具前景的手段之一。
5. A novel active power niter based on theoretical and experimental research of active power filtering technology is resented in the paper to overcome the disadvantages of parallel active power filter and accelerate the development of active power filtering technology.
   本文基于对有源电力滤波技术的研究，力图研制一种新型有源电力滤波器，克服现有并联型有源电力滤波器的不足，促进有源滤波技术的发展。
6. The article reports studies of multipurpose utilizations of nitrogen oxide which is waste gas is the tungsten-copper alloy in nitric acid, melting the remains hard metal, waste hard metal and tungsten-copper alloy with niter and making the high pure powder cobalt.
   探讨了粉末冶金行业用硝石熔炼法和硝酸溶解法处理硬质合金残料、废硬质合金、废钨铜合金金属钴时，产生的氧化氮废气的处理方法及综合利用。
7. Digital niter design and implementation based on DFT recursive algorithm
   基于递推DFT算法数字滤波器的研制

noun

1. (KNO3) used especially as a fertilizer and explosive

   Synonym:    potassium nitratesaltpetersaltpetrenitre