以下为句子列表：
英文: A miniature, hand-held sand-blasting device used to remove unwanted images from lithographic plates. Air erasers are also used to remove art without destroying the texture of the medium.
中文: 中义一种小型手握的喷砂装置，可去掉平版上不要的印纹部份而不会伤到印版。
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英文: AROUND 1452 the first operational printing press was created, followed in 1799 by lithographic printing. Now, these inventions are reflected in the world's first bacterial printing press.
中文: 据《新科学家》杂志网站2005年5月30日消息，1452年第一台印刷机诞生，随后在1799年人们发明了平版印刷技术。现在，这些旧日的发明都在世界上第一台细菌印刷机上得到了体现。
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英文: As shopping-mall-style chips continue to sprawl outward, for example, it becomes increasingly hard to keep the photolithographic image in focus at the edges.
中文: 而且连接到远处的导线太长，会导致讯号延迟，因而减低了晶片的效能及复杂的功能。
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英文: Back then, chip designers considered it risky to add two or three layers of metal on top of the silicon wafer because each new layer added hills and valleys that made it difficult to keep photolithographic patterns in focus.
中文: 当时的晶片设计者认为在矽晶圆上加上两三层金属有点冒险，会使晶圆表面凹凸不平，增加光刻过程中聚焦的困难。
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英文: The lithographic and etching process for a membrane creates a mesh of metal wires with silicon dioxide filling the space between them.
中文: 薄膜先以微影及蚀刻制程制作出金属线路，线路之间则填入二氧化矽。
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