- A bolt shaped like the letter U, fitted with threads and a nut at each end.U形螺栓：形状象字母U的螺栓，配有螺纹，两端各有一个螺帽
- united
- united
- United Arab Emirates
- United Arab Republic
- United Electronics Institute
- United Kingdom
- United Nations
- United States
- United States Air Force Academy
- United States Coast Guard Academy
- United States International University
- United States Merchant Marine Academy
- United States Military Academy
- United States Naval Academy
- unites
- unities
- uniting
- unitise
- unitive
- unitize
- unitized
- unitizes
- unitizing
- unit pricing
- unit rule
- 油浇火燎
- 油海
- 油浸
- 油浸枇杷核
- 油浸浸
- 油润
- 油渍
- 油渍渍
- 油渍麻花
- 油渣
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