①. 對于操作和檢修(xiu)空(kong)間(jian)用(yong)雙點(dian)畫線表(biao)示(shi)，延伸至相鄰圖紙的空(kong)間(jian)也應在本圖上(shang)表(biao)示(shi)。
②. 需要表(biao)示的空(kong)(kong)(kong)間：換(huan)熱器(qi)管(guan)束抽出(chu)空(kong)(kong)(kong)間；過濾器(qi)濾網(wang)抽出(chu)空(kong)(kong)(kong)間；更換(huan)催化劑時(shi)汽車(che)進入的空(kong)(kong)(kong)間；吊車(che)的起(qi)吊空(kong)(kong)(kong)間。
③. 管道(dao)布(bu)置平面(mian)圖維修空間邊界(jie)的(de)表(biao)示(shi)實例如圖10-26～圖10-28所示(shi)。
