以下为句子列表：
英文: A sine wave has the same amplitude (distance from centerline to the top of a peak) and wavelength (distance from peak to peak) over time.
中文: 一个正弦波有固定的振幅（波峰顶部的高度）和波长（波峰的间距）。
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英文: Abstract: It proposes a model for shaft centerline measurement and winding level,gives the coordinates transformation formula of measured data,and develops the program diagram for centerline measurement of wind-shaft.
中文: 文摘:提出了一种便于微机处理的轴线的空间解析表达方法以及轴线弯曲程度的表示方法，给出了轴线测量数据获取方法与坐标转换公式，提出了零件轴线弯曲时精密测量的一般步骤。
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英文: Both feet need to be under you at the same time, one in front of the other, with the toes pointing perpendicular to the centerline of the board.
中文: 两只脚必须同时收到身下，位置一前一后，脚尖的指向与冲浪板的中轴线垂直。
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英文: Centerline number samples are shown to aid field workers estimate the proper final (right even, left odd) assignment.
中文: 于图上加注辅助号码供承办员作最后（左单，右双）定号。
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英文: Inspecting centerline positioning for shaft system and rudder system before boring.
中文: 轴、舵系镗孔前中心线定位检查。
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