Cloaking her triumph, Mammy set down the tray.嬷嬷掩饰着得意之情, 立刻放下盘子.An occasional recourse to philosophical or mystical doctrines succeeded in cloaking some difficulties.偶尔求助于哲学的或者神秘的教义已经成功地掩盖了一些困难.In the hall and adjacent r...
To guarantee this condition, the grids are sent through some mechanical operations.为保证这一条件, 板栅应作一些机械加工.Typical framed structures are beams, grids, plane and space frames or trusses.典型构架结构为梁 、 格栅 、 平面的和空间的框架或桁架.The machin...