名词
中文翻译：底部固定螺栓
同义词：
["底板固定螺栓，底部紧固螺栓例句：1. The car's bottom fastening bolt was loose", 'causing the engine to vibrate.（汽车的底部固定螺栓松动了，导致发动机震动。）2. The engineer tightened the bottom fastening bolts on the bridge to ensure stability.（工程师拧紧了桥梁上的底部固定螺栓，以确保稳定性。）']
例句：
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1. The car's bottom fastening bolt was loose, causing the engine to vibrate.
汽车的底部固定螺栓松动了，导致发动机震动。
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2. The engineer tightened the bottom fastening bolts on the bridge to ensure stability.
工程师拧紧了桥梁上的底部固定螺栓，以确保稳定性。
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3. The construction workers replaced the damaged bottom fastening bolts with new ones.
建筑工人用新的底部固定螺栓替换了损坏的部件。