higher term的用法和樣例：
例句
- The higher orders were retained as an infinite sum of standing eigen-waves to deal with the fields inside the grooves.
其中對槽區內的場(chǎng)處理，保留其高次項，表示為一無(wú)限本征駐波之和的形式。 - We propose adding a term that is related to the fourth power of offset into the traveltime equation, and expressed it by a fraction expansion.
為此，在時(shí)距關(guān)系中增加含炮檢距的四次項，并采用分式展開(kāi)法表示該四次項，同時(shí)引入遠偏移距收斂因子。
