名词
中文翻译：索引梁
同义词：
['reference beam', 'reference point例句：1. The engineer used the index beam to measure the distance between the two points.（工程师使用索引梁测量两点之间的距离。）']
例句：
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1. The engineer used the index beam to measure the distance between the two points.
工程师使用索引梁测量两点之间的距离。
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2.The construction of this bridge required the installation of several index beams.
这座桥梁的建设需要安装几根索引梁。
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3. The index beam is crucial for ensuring the stability of the structure.
索引梁对于确保结构的稳定性至关重要。