以下为句子列表：
英文: Based on mass-spring model, a method of automatic mode-selecting method is presented to solve the difficulties of selecting corresponding modes close to the excitation frequency, in adaptive perturbation for mistuned bladed disks.
中文: 摘要针对自适应摄动法在失谐叶盘受迫振动分析中，选择接近激振力频率的相应模态数目难于控制的问题，基于质量－弹簧模型，提出一种自动选择模态的方法。
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英文: My factory specialized production each kind of stainless steel bushing knife, scissors, western-style kitchen knife, each kind of stainless steel product, chef knife, bread knife, meat thin-bladed knife, fruit knife for scraping hides, tin osteotome.
中文: 我厂专业生产各类不锈钢套刀、剪刀、西式厨刀、各类不锈钢产品，厨师刀、面包刀、肉片刀、果皮刀、锡骨刀。
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英文: The results showed that the influence of the lower impeller on NJSG was the largest, and three-bladed back-sweep impeller was the optimum.
中文: 结果表明，底层桨对临界搅拌转速的影响最大，最佳的底层桨为3叶后掠桨。
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英文: With a long, thin bladed knife, cut a five or six-sided opening out on the top of the pumpkin around the stem.
中文: 用细长的刀子延著南瓜蒂切割出一个五角形或六角形的盖子，再使用大汤匙刮除果肉。
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