一列简谐横波沿x轴负方向传播,波速为v=4m/s。已知坐标原点(x=0)处质点的 发布时间:2017-04-26 15:55 │ 来源:www.tikuol.com 题型:不定项选择 问题: 一列简谐横波沿x轴负方向传播,波速为v=4m/s。已知坐标原点(x=0)处质点的振动图像如图所示,在下列4幅图中能够正确表示t=0.15s时波形的图是[ ]A.B.C.D.
题型:不定项选择 — English has a large vocabulary, hasn't it? — Yes. _____ more words and expressions and you will find it easier to read and communicate. [ ]A. To know B. Knowing C. Know D. Known 查看答案