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  1. abbreviations - Usage of "p." versus "pp." versus "pg." to denote …

    Mar 1, 2011 · The correct forms are p. for a single page, and pp. for a range. In many cases, actually, you don't need any of them. Quite commonly you'll find references in the form …

  2. latin - Conventions of abbreviations of pages (pp.), for academic ...

    May 17, 2017 · 120 pp, 10 figures. instead of, 120 pages, 10 figures. It looks to me that from Usage of "p." versus "pp." versus "pg." to denote page numbers and page ranges, the pp. …

  3. pp材质的性能和分类是什么? - 知乎

    pp是安全的食品容器用塑胶,但若老化就不安全,例如台湾就有热水器内pp塑胶老化的先例。 由于侧甲基连接的主碳链骨架碳原子是一级碳原子,使PP更易受氧攻击而氧化,且在铜的作用 …

  4. PP 塑料和 PE 塑料有什么不同? - 知乎

    Pp,主要成分是聚丙烯. PE,主要成分是聚乙烯. Pp的强度,刚度,硬度优于聚乙烯,可在100摄氏度使用具有良好的介电性能,胶频绝缘性且不受湿度影响,但低温时变脆不耐磨易老 …

  5. PP vs Was - English Language & Usage Stack Exchange

    Apr 6, 2018 · A passive verb needs to have [to be] before the main verb (which should be in past participle form). 'has been' and 'was' are both forms of [to be], thus both sentences are …

  6. PP 材料的优缺点有哪些? - 知乎

    pp材料的应用领域: pp材料(聚丙烯)由于其独特的性能特点,被广泛应用于各个领域。以下是一些pp材料的主要用途: 1.包装材料:pp材料具有良好的透明度和机械性能,常用于制作塑料 …

  7. Usage of "p." vs "pp." to denote two separate pages

    Apr 7, 2020 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …

  8. abs 塑料和 pp 塑料有什么差异? - 知乎

    pp有出色的耐应力开裂性,有很高的弯曲疲惫寿数,俗称“百折胶”。 ABS工程塑料即PC+ABS(工程塑料合金),在化工业的中文名字叫塑料合金,之所以命名为PC+ABS,是因为这种材料既具 …

  9. 请问食品级PP和工业PP有什么区别? - 知乎

    这些工业pp往往成本低,有可能会被不良生产厂家用于生产食品容器。 pp材料是聚丙烯的简称,是有丙烯聚合制成的一种热塑性树脂。在我们生活中,随处可见,比如pp塑料碗,pp塑料 …

  10. PP材质和PP5材质哪个好? - 知乎

    食品级pp通常会分为7个等级,而pp5是食品级pp中的其中一个品类。在众多的食品级pp材质塑料制品当中,经常看到的矿泉水瓶多数是是pp1材质,而人们常见的白色药瓶是pp2材质,pp3的 …

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