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dead block (貨車等的)緩沖板。

dead calm

The development of basic functional models for computing , designing , editing and intercommunicating , such as the layout algorithm , the design and placement of dead block , and adding and deleting of heat tubes 完成了系統必要的設計、編輯和交互功能,包括:折流板的設計與放置,連續增添及刪除換熱管、拉桿等。