It USES a thin stream of falling sand to measure time.
它使用一小股落下的沙子来计算时间。
Biochemical oxygen demand — the measure of the oxygen demand placed on a stream by any particular volume of effluent.
生化耗氧量——在由特定容量排放的小河中氧需求的测量。
Introduced a ratio method to measure the heat stream temperature with platinum resistor, the interface circuit is simplified and the precision for the flow measurement improved largely.
引入了一种基于比率法的铂电阻高精度测温方法，简化了接口电路，从而提高了热蒸汽密度和流量计量精度。
应用推荐