Sludge incineration is a frequently employed disposed method.是什么意思？

Sludge incineration is a frequently employed disposed method.

污泥焚烧也是一种常用的处置方法.

sludge

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例句
Theoretically sludge yield is nil for the extended aeration process.
对延时曝气法而言,理论上污泥生成量应为零.

incineration

n. 焚化，火葬；

例句
Sludge incineration is a frequently employed disposed method.
污泥焚烧也是一种常用的处置方法.

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

frequently

adv. 频繁地，屡次地，往往，动，动辄；

例句
Women frequently say that they feel awkward taking the initiative in sex...
女人们经常说她们不好意思在性生活上采取主动。

employed

v. 雇用( employ的过去式和过去分词 )，使用，利用；

例句
The tactics employed can range from overt bullying to subtle emotional blackmail.
从公然威吓到微妙的情感胁迫，各种战术都用上了。

disposed

adj. 有意于，有…倾向的，愿意的，想干的；v. 使倾向于，处理(dispose的过去式和过去分词)；

例句
Solid low-level waste will be disposed of deep underground...
放射性水平低的固体废料将做地下深埋处理。

method

n. 方法，条理；

例句
...an accrual method of accounting.
会计学中的应计法