首页 > 英语词典 > Y开头的英语单词
时间:2021-09-27 11:23:14
n.【数学】y轴,纵坐标轴。
the vertical axis in a plane coordinate system
Hence, the antenna along the y-axis does not send any light to the observer directly below it .因此,沿y轴的天线,对y轴正下方的观察者不发送任何光波