笛卡兒坐標(biao)系(xi)(xi)分為左手(shou)(shou)系(xi)(xi)和右(you)(you)手(shou)(shou)系(xi)(xi)。配(pei)管設(she)計柔性(xing)分析采用(yong)右(you)(you)手(shou)(shou)系(xi)(xi)，右(you)(you)手(shou)(shou)坐標(biao)系(xi)(xi)這名詞是由右(you)(you)手(shou)(shou)定則而來的(de)。先將(jiang)右(you)(you)手(shou)(shou)的(de)手(shou)(shou)掌與(yu)(yu)手(shou)(shou)指(zhi)(zhi)(zhi)伸直，然后，將(jiang)中指(zhi)(zhi)(zhi)豎起與(yu)(yu)食指(zhi)(zhi)(zhi)呈直角關系(xi)(xi)，再將(jiang)大拇指(zhi)(zhi)(zhi)往上指(zhi)(zhi)(zhi)去，與(yu)(yu)中指(zhi)(zhi)(zhi)、食指(zhi)(zhi)(zhi)都呈直角關系(xi)(xi)，則大拇指(zhi)(zhi)(zhi)、食指(zhi)(zhi)(zhi)、與(yu)(yu)中指(zhi)(zhi)(zhi)分別表示了右(you)(you)手(shou)(shou)坐標(biao)系(xi)(xi)的(de)X軸，Y軸，與(yu)(yu)Z軸，如圖17.3所示。同樣，用(yong)左手(shou)(shou)也可以(yi)表示出左手(shou)(shou)系(xi)(xi)。