dash的解释？ 似乎与文控(document control)有关. 请参看下面的附录. 我的理解: dash就是指破折号. dash前为原始文件编号, dash后为修改的版号a,b,c... ''appendix e - revision of drawings method a --utilizes "x" revision letter system. uses "x0" (zero) for first entry when drawing is prepared. "xa", "xb", etc. are used until product baseline release which is a dash "-". next revision will be "a", "b", "c", etc. method b same as method a but includes an allocated baseline revision. method c revision begins with "a" during initial document preparation and continues alphabetically. product baseline is only noted within the sequential revision description. method d initial release is the product baseline and the revision description states that it is a product baseline as revision dash "-". subsequent revision are alphabetical "a", "b", "c", etc. method e concept drawings are revision "1", "2", "3", etc. prototype drawings are "x0" (zero), "xa", "xb", etc. production drawings, as defined by the product baseline at revision dash "-" and continuing through revision "a", "b", "c", etc. if not prototype revision, may skip from concept revision to product baseline. method f alternatives to methods: a, b, and c. allows removal of all prior revision history upon creating the product baseline. but, a note is left in the revision block stating old revision history has been removed.''查看更多
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