以下为句子列表：
英文: Abstract: In this article,the optimization of surface crack detection of speed reducer gear was made using fuzzy set theory,the result show that the rotation magnetic field is the best way of surface crack detection and lots of extending surface fatigue c
中文: 文摘:采用模糊集的贴近度计算对齿轮表面探伤方法进行了优化选择，表明旋转磁场探伤是齿轮表面探伤的最佳方法，在实用中检测出大量的正在延伸扩展的表面疲劳裂纹。
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英文: By analyzing phase angle of meshing geometric drawing position, the theoretical formula of cycloid gear actual operating space of cycloid planetary gear speed reducer is driven, at the same time, fitting a curve, and discussing engineering significance of
中文: 摘要通过分析啮合相位角几何图形的位置，推导出摆线针轮行星减速器中摆线轮实际工作范围的理论公式，画出了啮合相位角函数的拟合曲线，并结合实际讨论其函数曲线的工程意义。
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英文: Hump lead speed reducer is a special equipment urgently needed in railway car grouping station of small or medium capacity.
中文: 摘要驼峰减速器是当前中、小能力车列编组站驼峰改造过程中急需研制的一种专用调速设备。
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英文: SEW speed reducer is selected to reduce noise (75db), high transmission efficiency; low energy consume; long using period.
中文: 性能特点：1.选用SEW（德国）减速机，噪音小，仅为76分贝，传动效率高、节能，寿命长。
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英文: Soleplate which is adjustable slightly is installed on the speed reducer and bearing seat. The soleplate is easy installed and lower noise.
中文: 减速机和前、后轴承座，均设有可上下、左右微调的底板，安装、拆卸调试方便，噪音小。
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