佛山市炎澤五金建材有限公司為您提供批發(fā)京式護(hù)欄肇慶馬路隔離欄從化城市道路現(xiàn)貨,。批發(fā)京式護(hù)欄 肇慶馬路隔離欄 從化城市道路現(xiàn)貨
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立柱縱向位置的確定:先在路緣石上用紅鉛筆根據(jù)立柱間距劃出橫線,。
determination of the vertical position of the column: first, draw a horizontal line on the curb with a red pencil according to the column spacing.
再用線繩和釘子順路方向上放出一條線,,反復(fù)調(diào)整線形,。
then use the rope&nail to set out a line along the road&adjust the alignment repeatedly.
然后用紅鉛筆在這條線上劃出與橫線垂直的縱線,,形成十字線,。
then use a red pencil to draw a vertical line perpendicular to the horizontal line to form a cross.
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