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关注：1
2013-05-23 12:21
求翻译：The use of reciprocating piston compressors began in the 19th century是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
The use of reciprocating piston compressors began in the 19th century
问题补充： |
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2013-05-23 12:21:38
往复活塞式压缩机的使用开始于19世纪
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2013-05-23 12:23:18
use of The reciprocating piston compressors began in the 19 th century
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2013-05-23 12:24:58
The use of reciprocating piston compressors began in the 19th century
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2013-05-23 12:26:38
The use of reciprocating piston compressors began in the 19th century
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2013-05-23 12:28:18
The of reciprocating piston compressors use began in the 19 th century;
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