Cad have already replaced the t - square and drawing board and become to design the main tool of the personnel along with the cad technique development , and consumedly lower the labor strength of the design personnel , and increase the work efficiency of the design personnel 隨著cad技術的發展, cad已經代替丁字尺和圖板成為設計人員的主要工具,大大降低了設計人員的勞動強度,提高了設計人員的工作效率。
百科解釋
A T-square is a technical drawing instrument used by draftsmen primarily as a guide for drawing horizontal lines on a drafting table. It may also guide a set square to draw vertical or diagonal lines.