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包衬厚度确定，滚筒中心距变小压力增大。
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PS制版过程中，上胶的作用是保护印版表面，防止印版划伤或吸附尘埃。（ ）
The Chinese word “翻译” refers to the activity of _____________________ in a different language while retaining _____________________ . It also refers to a translator or interpreter.
The development of sports translation can be divided into _______ stages.
After _____________________, Soviet Union had great influence on China and a lot of sports books were translated and introduced into China.
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