constant data

• 恒定数据

constant data的用法和样例：

例句

1. But ordinary xenon lamps flame unstably, then one or several data points can be sampled during a single flash.Tens of flashes are needed to achieve a whole test.
   但一般频闪氙灯的光强不恒定，单次闪光一般只能采集一到几个测试数据，故一次测试需要至少闪光几十次。