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1. The machine uses an automatic expansionrod to adjust the size of the partsbeing assembled.
这台机器使用自动扩张杆来调整待组装部件的大小。
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2. The engineerdesigned a new automatic expansion rod that couldhandle heavier loads.
工程师设计了一种新型的自动扩张杆,可以处理更重的负载。
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3.The automatic expansion rod was used in theassembly process to ensure accurate fitment.
在装配过程中使用了自动扩张杆,以确保精确配合。