Why is it important for paper or board to be acid-free and lignin-free?

I placed it in acid free paper and set it aside for later restoration.

俺把它在酸性纸并搁置以后恢复.

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Printed on acid-free paper.

可浏览文摘.

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Acid-free, contains 50 % recycled fiber.

无酸, 包含50%可回收纤维.

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Performance characteristics of-prepared acid free non-ironing finishing agent PC was investigated.

探讨 自制 聚羧酸型无甲醛免烫整理剂PC的 应用性能.

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Two-photon microfabrication ( TPM ) technology need data preparation software for transforming CAD models to fabricating data.

双光子加工技术需要通过数据准备软件将CAD模型转换为加工数据.

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A steel wire screen above the office's credenza.

一张钢丝屏风悬挂在办公室的书柜之上.

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Credenza with 2 cabinets. Door clearance can be shown or hidden.

带有两个橱柜的书柜. 可显示或隐藏门的净空.

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Economic Justice for women has always been one of our key grant making themes.

在过去五年的拨款中,经济平等一直是妇女动力基金的重点拨款范畴.

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The law does not discriminate against any race , creed or color.

此条法律没有种族、宗教、肤色歧视.

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No one has any right to deny another person's creed.

没有人有权力否认他人的宗教信仰.

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That is the creed of this site.

这就是我们的信条.

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Here is a message that transcends the rites of any church or creed.

大自然在此的启示胜过任何一种宗教的仪式或教义.

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The article thinks, problem of wage price rigidity is the central problem of new Keynesia creed.

本文认为, 工资价格刚性问题是新凯恩斯主义的中心问题.

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Torn apart by creed! What about us?

被无情的教义撕裂! 我们如何?

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The information in this book is up the creed because it was written so long ago.

这本书成书已久,故其中的信息是错误的.

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He created the Olympic Charter, the Creed, the athlete's Oath, the opening and the closing ceremonies.

他制定了奥运会会章 、 信条和运动员誓词, 规定了开幕式和闭幕式的仪式.

英汉非文学 - 百科语料821

Rather than being a code or creed, the test appears in the form of questions.

四大考验不是法规,也不是教条, 而是以问题的方式呈现.

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Up until this point, everything in the Creed has been either invisible or distantly historical.

直到此时, 之前所有在信经中提到的事要么是看不见的,要么是历史久远的.

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What point in the antislavery creed would you have me argue?

关于反奴隶制的纲领你们要我说明哪一点 呢 ?

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Conservatives now argue, however, that Mr Obama has carried this creed into office.

但是, 现在保守派认为奥巴马先生已将这个信仰带入了白宫.

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