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關注：1
2013-05-23 12:21
求翻譯：for many quality-control reasons it is important to maintain the variations of the level of liquid steel in the mould within tight control and therefore sophisticated mould level control systems are used for this purpose是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
for many quality-control reasons it is important to maintain the variations of the level of liquid steel in the mould within tight control and therefore sophisticated mould level control systems are used for this purpose
問題補充： |
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