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单词
grade ring
释义
grade ring
grade ring
A precast concrete ring at the top of a manhole; used to adjust the top of the manhole so that it is set at the proper angle.
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pnicogen
pnictide
pnictogen
pnictogens
pnicu
pnid
pnidbs
pnie
pnier
pniewski, bogdan
pnif
pnig
pnigalion
pnigerophobia
pnigophobia
pnih
pn-ii
pnil
pnilf
pnim
pnina
pnin, ivan
pnin, ivan petrovich
pnio
pnip
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更新时间:2025/3/15 3:03:37