The test shows that size distribution of feeding coal, volatile content and its release as well as the total air rate and primary air ratio will influence the post combustion in CFB boiler.
Through collecting, dehydration, conditioned test and anti-jamming test of the sample, the content of trace urea dust in the air can be exactly determined by way of such technique.
通过对样品的采集、洗脱、消化水解、条件试验及抗干扰试验，证实本法能准确测定空气中微量尿素尘的含量。
3
The way to test oxygen content in the air, which is introduced in Junior Textbooks, doesn't work well.