您要了解印刷產品說明書常用有哪些紙，平常用得多的是雙膠紙、雙銅紙、啞粉紙。您少能肉眼可以判斷出是哪一種材質。
You need to know which types of paper are commonly used in printing product manuals, and the most commonly used ones are double adhesive paper, double copper paper, and matte paper. You can at least tell with your naked eye which material it is.
雙膠紙，也叫書寫紙，類似于打印機用的那一種紙，看上去比較白，摸上去比較光滑，但紙張表面比起雙銅紙、啞粉紙還是略顯粗糙，肉眼仔細看，能清楚看到紙張的紋理。
Double adhesive paper, also known as writing paper, is similar to the type of paper used in printers. It looks relatively white and feels smooth, but the surface of the paper is still slightly rough compared to double copper paper and matte paper. Upon closer inspection with the naked eye, the texture of the paper can be clearly seen.
雙銅紙看上去去比較光亮，表面有一層乳白的涂層，摸上去很光滑，放在陽光或者燈光下會反光。我們平常見到的公司宣傳畫冊，的宣傳單這些一般都是雙銅紙來印刷的。
Double copper paper looks relatively shiny, with a layer of milky white coating on the surface, which feels very smooth and will reflect light when placed in sunlight or light. The company brochures and supermarket flyers we usually see are usually printed on double copper paper.
啞粉紙、雙銅紙的構成原理是一樣，只不去表面的涂層有區別，啞粉紙表面不反光，手摸上去跟雙銅紙一樣，比較細膩，平滑。常用于一些藝術感比較強的畫冊印刷。
The composition principle of matte paper and double copper paper is the same, except for the difference in surface coating. The surface of matte paper does not reflect light, and it feels like double copper paper by hand, which is relatively delicate and smooth. Commonly used for printing art albums with strong artistic appeal.
當您可以用肉眼輕松分辨出說明書的材質，接下來只需要來測量紙張的厚度即可。測量紙張的厚度需要用到游標卡尺或者數顯卡尺（前提條件是經過機構校正過的）。 于如何使用卡尺，請您參考百度百科卡尺詞條，或者請教公司的人士。通過卡尺的測量，您就可以清楚知道不同克數紙張的厚度。
When you can easily distinguish the material in the manual with your naked eye, you only need to measure the thickness of the paper. Measuring the thickness of paper requires the use of a vernier caliper or digital caliper (provided that it has been calibrated by a professional institution). As for how to use a caliper, please refer to the Baidu Baike caliper entry or consult a professional from the company. By measuring with a caliper, you can clearly know the thickness of different grams of paper.
當然不同的紙張厚度還是有一些細微差別的，印刷廠提供樣品時，您先問一下是哪種的紙。當您對采購的說明書材質做到心中有數時，才能正確地判斷印刷廠的樣品是否跟自已手中的說明書原樣一致。
Of course, there are slight differences in the thickness of different brands of paper. When the printing factory provides samples, it is best to first ask which brand of paper it is. Only when you have a clear understanding of the materials used in the purchased instruction manual can you correctly determine whether the sample from the printing factory is consistent with the original instruction manual in your hands.
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