Experiments in pneumatic conveying show that there exists a maximum particle concentration.
气力输送实验表明，这里存着一个最大的颗粒浓度。
By using the capacitance tomography, tested and studied was the concentration of solid conveyed by a dilute-phase pneumatic force at a normal temperature.
采用电容层析成像技术，对常温下稀相气力输送的固体浓度进行了测试研究。
The concentration and size of pulverized coal in pneumatic transportation pipe in power station are of great influence on the efficient, emission and operating safety.
电厂煤粉管道中煤粉浓度和细度对锅炉燃烧、污染排放及安全运行有很大影响。
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