noun🔗Share噗，切，呸 Pff"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。soundexclamationcommunicationChat with AIVocabulary GamePractice Reading
noun🔗Share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."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。physicsenergyelectronicstechnicalelectricsystemfunctionChat with AIVocabulary GamePractice Reading
