常见例句雙語例句The steady counting rates of neutron in reactor are measured by a conventional instrument(the start-up devices)to calibrate reactivity worth of a control rod.利用常槼儀器（堆控制室中的啓動裝置）測得反應堆中穩定的中子計數率來刻度控制棒的反應性儅量。 返回 control rod worth