说明工具

【计】 specification tool

说明的英语翻译：

explain; narrate; account for; illustrate; make out; say; show; specify; state
directions; explanation
【计】 DCL; declaration; elucidata; explanatory notes
【化】 specification; specify
【经】 explanation; explanatory note; justification

工具的英语翻译：

gear; goods; implement; instrument; means; tackle; tool
【计】 utility
【经】 facility; implement; means; tool