名词
中文翻译：真尺长
同义词：
['actual length', 'actual gauge length']
例句：
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1.The true gauge length of the car is 2.5 meters.
这辆车的实际长度是2.5米。
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2. The real length of the tunnel is much longer than the estimated one.
隧道的实际长度比估计的要长得多。
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3.The true gauge length of the bridge is crucial for its stability.
桥梁的实际长度对其稳定性至关重要。