In this paper stablecolour signal lights are discussed only.
本文只谈稳定灯光信号颜色的显示。
2
So the mixture of sulphur and carbamide is added after the solution appears colour, which makes the stable time of colour longer and the result more accurate.
为此,在显色后的溶液中加硫脲使颜色的稳定时间延长,提高了测试结果的准确性。
3
It'srich in nutritious snd health-keeping substants, less in precipitate, stable in colour, better in taste and valuable to be put into production.