As the ion inertial length increase, the wave train becomes broader and the number of oscillation periods in the wave train are reduced.
当继续增大离子惯性长度时，波列会变得宽阔，波列中的振荡周期数目减少了。
2
Provided is a method for manufacturing a surface acoustic wave device by which deterioration of electrical characteristics is reduced and the number of manufacturing steps is reduced.
本发明提供一种弹性表面波装置的制造方法，能够降低电气特性的劣化，减少制造工序的工数。
3
The second wave of bomb attacks reduced the number of shoppers in central London by more than a quarter compared with this time a year ago, it emerged today.