Percentage points abbreviation - English Language Usage Stack Exchange I've voted to close the present edition on lack-of-research grounds; gstats found pp in Wikipedia (though his tenacity in going on to find ppt is praiseworthy) It's the usual judgement call between close-voting inadequate questions (why 2 upvotes!?) vs appreciating the beyond-the-basics research some contributors put in in answering
pp 材料和 pet 材料有什么区别？ - 知乎 PP：聚丙烯：感官鉴别：手感硬，有弹性，白色透明，透明度较高，常有胶带及印刷字。特性：耐热性好，可达120℃，耐酸碱腐蚀，可用于装酱油、醋等。 PET：是乳白色或浅黄色、高度结晶的聚合物，表面平滑有光泽。在较宽的温度范围内具有优良的物理机械性能，长期使用温度可达120℃，电绝缘性
Usage of p. vs pp. to denote two separate pages is used for single page references, and "pp " for multipage pages However, if I'm quoting something from p 35 and p 40 from the same book, should I use "p 35 and p 40", or "pp 35 and 40"?