noun 下载 🔗分享 噗，切，呸 Pff Examples : "After I told him I couldn't lend him money, his only response was a dismissive "pf." " 我告诉他我不能借钱给他之后，他只是不屑地“噗”了一声。 sound exclamation communication 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 功率因数，功率因素 The ratio of the actual power to the apparent power in an alternating current power system; specifically, the cosine of the phase angle between the voltage and the current. Examples : "The power factor is of interest because it is a measure of the power which does useful work." 功率因数之所以重要，是因为它衡量了实际做功的有效功率。 physics energy electronics technical electric system function 与AI对话词汇游戏阅读练习
