angular displacement component的用法和樣例：
例句
- For each displacement component we find that there are only two values at the two ends of a boundary.
對每一位移分量，我們發現在一個邊界的兩端處僅有兩個值。 - However, the earliest long-period seismographs recorded dispersive waves with large transverse displacement components in the main tremor.
但是，最早期的地震記錄，就記錄下了主震中具有很大橫向位移分量的頻散波。
