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關注：1
2013-05-23 12:21
求翻譯：In very small maciines,the reciprocating motion is created by an eccentric drive whereas in large machines hydraulic action is used exclusively是什么意思？ 待解決
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- 離問題結束還有
In very small maciines,the reciprocating motion is created by an eccentric drive whereas in large machines hydraulic action is used exclusively
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