| 释义 |
〔hyperbolic〕hyperbolic cosine.双曲线函数之余弦〔power〕The product of the effective values of the voltage and current with the cosine of the phase angle between current and voltage in an alternating-current circuit.伏特量：交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积〔Gunter〕English astronomer and mathematician who invented a surveying chain, quadrant, and scale and introduced the trigonometric termscosine and cotangent. 冈特，埃德蒙：(1581-1626) 英国天文学家和数学家，发明了测链，象限仪和标尺，并引进了两个三角学术语，余弦 和 余切 |