This paper analyses the difficulty in potentiometers' Contact Resistance Variation (CRV) test, and introduces an effective test method-Qarsi-Envelopetest method (QETM).
本文分析了电位器接触电阻变化率(CRV)测量的难点，提出了一种行之有效的方法——准包络测量法。
2
Test pilots try to push the envelope.
试飞员尝试挑战极限。
3
To test this possibility, Bieniasz's team engineered an unrelated mouse retrovirus coated with the envelope protein that would have allowed the ancient chimpanzee virus to slip into cells.