四轴无人机全尺寸工程图纸

创作一张精确、清晰易读的标准四轴无人机工程图纸，尺寸单位为毫米。图纸须包含：由主视图、俯视图和左视图组成的三视图，以二维线稿表达三维结构；主要零件的分件图，并标出关键尺寸、孔位、材料和公差；说明零件装配关系的装配图；将零件拆开排布以展示结构关系的爆炸图；展示内部结构的剖视图；列明零件名称、数量和规格的清晰 BOM 物料清单；以及写明制造与复刻所需关键尺寸的尺寸标注图。图纸四角加入若干小型产品概念草图。使用统一的工程线宽、对齐的投影视图、尺寸箭头、剖面线、清晰可读的标签和干净的白色制图背景。不要虚构制造商、序列号或专有标志。

【English Prompt】
Create a precise, legible engineering drawing sheet for a standard quadcopter, with dimensions in millimeters. Include a three-view orthographic drawing with front, top, and left views using 2D linework to communicate the 3D structure; separate drawings for each major part with key dimensions, hole locations, materials, and tolerances; an assembly drawing showing how the parts fit together; an exploded assembly view spacing components to reveal their structural relationships; a sectional view exposing internal structure; a clear bill-of-materials table listing part names, quantities, and specifications; and a dimensional-annotation view with the key dimensions needed for manufacturing and replication. Add several small product-concept sketches in the sheet corners. Use consistent technical line weights, aligned projections, dimension arrows, section hatching, readable labels, and a clean white drafting background. Do not invent a manufacturer, serial number, or proprietary logo.

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