backing-up

英 ['bækɪŋ'ʌp] 美 ['bækɪŋ'ʌp]

• 倒车,里壁砖

英英释义

动词 back up:

1. give moral or psychological support, aid, or courage to

2. move backwards from a certain position

3. establish as valid or genuine

4. make a copy of (a computer file) especially for storage in another place as a security copy

5. become or cause to become obstructed

词汇搭配

• top backing up roll 上支承辊
• backing up 封底焊
• backing-up strip 垫片