弧分量的英文：
arc component

arc是什么意思：
n. 弧（度）；弧形物；天穹；弧光
v. 形成拱状物；形成电弧；走弧线

piercing by electric arc
电弧穿孔

The beach swept around in an arc.
海滩呈弧形伸展开来。

The secant of the complement of a directed angle or arc.
余割有向角的余角或弧的余割

An electric arc is struck by contacting the electrodes.
接触电极便击出电弧。

A rainbow arced gracefully over the town.
彩虹在小城上空画出了一道优美的弧线。

component是什么意思：
n. 构成要素；零件；成分
adj. 组成的；构成的

time change component
定时更换的部件

Create component as new on the descendent.
创建新的派生组件.

A computer consists of thousands of components.
电脑由成千上万个部件组成。

These are the component parts of that machine.
这些是那台机器的零组件。

Is a single component analysis sufficient or is it desirable to do a multi-component analysis?
单一组分的分析已经足够还是需要进行多组分分析?