It must be doubted that ventilation has any significant effect on the preservation of objects which themselves are the pollution source, such as stacks of acid paper, or decaying acetate film sheets.
如果文物本身就是污染物来源，例如酸性纸张、或者已经老化的醋酸纤维胶片，我们怀疑通风也不可能起到的很大作用。
Litmus paper turns red in the presence of an acid.
石蕊试纸遇到酸就变红。
In this paper, the process of polymalic acid (PMLA) synthesis was studied.
本文对合成聚苹果酸的过程进行了研究。
The paper reviews the present situation of pivalic acid preparation in China.
本文评述了我国特戊酸合成的现状。
The paper introduced the method of determining the methanoic acid, ethanoic acid and propanoic acid in bio-diesels via ion chromatography.
文章建立了用离子色谱法测定生物柴油中的甲酸、乙酸、丙酸的方法。
Tranexamic acid, explains Jerrold Levy of Emory University, in a comment piece accompanying the paper, interferes with the process of fibrinolysis, the breakdown of clots.
美国艾莫利大学的杰罗尔德 列维在该论文的补充解释中说，氨甲芳酸干扰了纤维蛋白溶解过程，即血块的溶解。
Wrap them right: Protect your ornaments before boxing them by wrapping them individually in acid-free tissue paper or 100 percent cotton cloth.
正确的包裹饰品：用防酸的绵纸或100％纯棉的布料单独包裹每件饰品，可防止饰品互相磕碰。
The Sun's not kept by the British Museum, the paper destroys itself itself it's so acid...
英国博物馆不档存《太阳报》，这份报纸自毁于尖酸……。
This paper introduced the process and quality level of using orange juice as raw material to produce vinegar by alcoholic and acetic acid fermentation.
本文介绍了用桔子汁为原料，经酒精发酵和醋酸发酵生产果醋的工艺及其产品的质量特点。
In this paper, the classification and synthesis methods of amino-acid type amphoteric surfactant, and the progress of its application in leather industry were introduced.
本文综述了氨基酸型两性表面活性剂应用于皮革中的研究动向，并重点介绍了其分类及合成方法。
So, this paper studies the types and basic functions of the BMS, designs a modular BMS based on the horizon lead-acid batteries.
因此，本文研究了电池管理系统的类型和基本功能，基于水平铅布电池设计了一种模块化的电池管理系统(BMS)。
This paper presents a case history where an associative polymer was applied during matrix acid treatment of a damaged well.
本文讲述一个井史案例，将聚合物应用于受到伤害的井的基岩酸化处理。
Constructed of ductile cast iron, it ensures maximum strength and endurance for possible exposure to acid wash down in pulp and paper applications.
韧性铸铁建造，保证最大的力量可能接触酸洗的纸浆和纸张应用瘫痪和耐力。
The paper introduces the catalyst research advances in esterification reaction of carboxylic acid.
本文介绍了羧酸酯化反应催化剂的研究进展。
This paper according to the characteristics of fill sewage up, introduces a new acid pickling surface lines treatment the scale technology.
本文针对注水管线回注污水的特点，提出了一种新的地面注水管线酸洗除垢工艺。
The infection of different concentration chitosan- acetic acid solution surface sizing to the technical feature of paper was studied.
研究了不同浓度的壳聚糖-醋酸溶液表面施胶对纸的技术性能的影响。
The process of removing acetic acid from furfural wastewater by solvent extraction is studied in this paper.
本文研究了溶剂萃取法去除糠醛废水中醋酸的工艺过程。
By monitoring the change of internal pressure of batteries, the paper studies the regulation that spirally wound lead-acid batteries produce gas during the charge.
文章通过检测电池内压的变化，研究了卷绕式铅酸蓄电池充电时产生气体的规律。
Modern writing inks usually contain ferrous sulfate with a small amount of an acid; on paper they darken and bond becoming permanent.
现代写字用的墨水通常包括了硫酸亚铁和少量的酸；写在纸上，颜色会越来越深，且能保持永不褪色。
The process of removing acetic acid from furfur al wastewater by solvent extraction is studied in this paper.
本文研究了溶剂萃取法去除糠醛废水中醋酸的工艺过程。
To test the theory, the team deposited either nicotine or tobacco smoke on sheets of paper, and exposed them to nitrous acid.
为验证这一理论，他们将尼古丁或烟草烟雾吸附在纸上，让它们与亚硝酸反应。
The paper summarizes the environmental hormone behavior, source and existing situation of phthalic acid ester pollutants in air, water, organism and sediment.
该文叙述了环境中邻苯二甲酸酯类污染物的环境激素行为、来源及在环境空气、水体、生物、底质中的存在情况。
The paper summarizes the environmental hormone behavior, source and existing situation of phthalic acid ester pollutants in air, water, organism and sediment.
该文叙述了环境中邻苯二甲酸酯类污染物的环境激素行为、来源及在环境空气、水体、生物、底质中的存在情况。
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