ksb 中文意思是什麼
ksb
解釋
三期-
With its newly developed diffuser, the ksb group has managed to lower by 20 db the noise emission of a large pump produced 21 years ago in what was then the gdr
通過最新研製的消聲器，凱士比公司成功將21年前生產的一臺噪音很大的大型機泵的聲音降低了20分貝。
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