名词
中文翻译：定位筒
同义词：
['positional tube', 'positional cylinder']
例句：
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1.The engineer used a positional cylinder to measure the distance between two points.
工程师使用一个定位筒来测量两点之间的距离。
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2. The machine uses a positional cylinder to adjust its height.
这台机器使用一个定位筒来调整其高度。
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3.The positional cylinder is crucial for ensuring accurate measurements in engineering projects.
定位筒在工程项目中确保准确测量至关重要。