在实践中有三种方法来获得相位差.In practice there are three methods of accomplishing this phase difference.本论文的研究对象是相位差法超声波流量计.The intention of this article is phase difference ultrasonic flowmeter.信噪比高, 相位差小, 具有较高的动态分辨率.High signal to ...
Owing to the bad weather, we didn't go to the park.由于天气不好, 我们没有去公园。Stimulation of the autonomic nervous system can occur owing to hypoxia or hypercarbia from depressed ventilation.自主神经系统兴奋作用的发生是由于通气受阻而导致的低氧血症和高碳酸血症引...