工程制圖開放實驗二指導(dǎo)書-文庫吧資料
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【正文】 線上距圓心等于半徑處截取四點，過四點畫圓即可。畫短線，常以手腕運筆，畫長線則以手臂動作。眼要注意終點方向。~60186。角，執(zhí)筆穩(wěn)而有力。筆桿與紙面45186。Dimensions should be correct and clear.? 徒手繪圖方法 Skills要畫好草圖，必須掌握徒手繪制各種線條的基本手法。Freehand, or sketch, is a drawing method by which shapes and sizes of objects are obtained by ocular estimate method and drawings are created without help of drawing tools. Sketches are often used in the stages of machine mapping, scheme design, technological exchange and so on.? 畫草圖的要求是 Requirements（1）畫線要穩(wěn)，圖線要清晰；Lines should be clear。Decide a reasonable representation scheme and draw the threeview of the design by freehand sketching.四、 實驗指導(dǎo)——徒手繪圖方法與技巧 Methods and Skills of Freehand Sketching徒手圖也稱草圖，是不借助繪圖工具用目測形狀及大小徒手繪制的圖樣。Master mon simplified and conventional representations三、 實驗內(nèi)容 Contents1．徒手繪制一張“構(gòu)型積木”在包裝盒內(nèi)的原始擺放位置平面圖；Draw a plan of the original positions of a box of “configuration building blocks” by free sketching.
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