P-ring structures P型环网结构
top p ring 顶圈
clamp p ring 夹圈
back-up p ring 背位环
P Pink ring 粉红圈
left maximal P hereditary ring 左极大P遗传环
同义词： public relations
以上来源于: WordNet
In the first chapter, we discuss the fully graded algebras over discrete valuation ring with an algebraically closed residue field of characteristic p.
第一章中，我们研究了剩余域是代数闭域的离散赋值环上的完全分次代数；
This paper gives the definition of P-hereditary ring and discusses the necessary and sufficient condition about the submodule closure of cyclic module.
本文给出p—遗传环的定义及循环模的子模闭的充要条件。
Results The marginal seating of the casting without ring investment had significant difference compared with the castings with ring investment ( P< 0.05).
结果无圈包埋组铸件的边缘适合性与有圈包埋组相比有显著性差异（P< 0 .0 5 ）。
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