In order to ensure A phase and Bphase circuits are symmetric, digital potentiometer X9C503 with exterior pressed key in the feedback amplification circuit is designed.
在反馈放大电路设计时,采用数字电位器X9C503与外部按键配合,达到了A、B两相电路的对称性。
2
So what's the mole fraction of B in the gas phase?
那么B在气相中的摩尔分数是多少?
3
It's the molar fraction of B in the gas phase times the total pressure.