本文在对国内几种常用的断路器的试验项目和要求进行统计之后，提出了程控测试仪应具备的基本功能并确定了主要技术数据。
After statistic of several typical breakers' testing item and requirement, give the basic function and the main technical date of the instrument.
奇怪的是，作为此古桥最基本的技术数据的净跨径现尚无定论，众说纷纭。
It is quite strange that no final conclusion has yet been reached on the clear span of this ancient bridge as the most basic datum. Public opinions are divergent.
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