well-fixed
6.The interface base on the chip CH365, the speed of the data transmission can reach 10M/s, the abrupt speed can reach 32M/s, The experiment of the fixed-time counter has been performed well, the fixed-time counter measure the tiptop speed can reach 500khz. , and the final result matches the functional requires and technical index. It has been fully proved that the designed is viable.
8.Abstract: This paper, in terms of conception, logic and form, deeply and systematically analyses and researchs some important problems in the expression of error and uncertainty of measurement, and reterates the definition of error, result and uncertainty of measurement, coverage uncertainty may be used instead of expanded uncertainty, as well the opinion of fixed quality of error and fixed quantity of uncertainty of measurement, which the author once put.

