·2,447,543篇论文数据，部分数据来源于NoteExpress
All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.
常规可控震源都是采用瞬时频率随时间线性变化的扫描信号。
youdao
应用推荐
模块上移
模块下移
不移动