laggardness
n.迟缓,缓慢;落后
例句
This article described the energy shortage, the laggardness of the heat treatment equipment, the status of high energy cost and the significance of carrying out energy saving.
本文叙述了我国能源供应短缺、 热处理工艺设备落后和高能耗的现状以及开展节能活动的重要意义。