短語詞組短語PSR Big pos slip 與電梯運(yùn)轉(zhuǎn)方曏一致的鋼絲繩滑移太大PSR Big neg slip 與電梯運(yùn)轉(zhuǎn)方曏相反的鋼絲繩滑移太大 返回 big slip