gratings的音标：gratings的英式发音音标为：[ɡ'reɪtɪŋz]gratings的美式发音音标为：[ɡ'reɪtɪŋz]...

n.格栅，栅栏，格子( grating的名词复数 )...

The light is resolved by prisms, gratings, or by an interferometer.光线用棱镜 、 光栅或干涉仪分解.Many of the roofs were so full of holes that they looked like gratings.许多屋顶千穿百孔,象筛子一样.All gratings shall lie flat with no tendency to ro...

CBS's ratings again showed huge improvement over the previous year.与前一年相比，哥伦比亚广播公司的收视率再次大幅提高。Democrats were reluctant to take on a president whose popularity ratings were historically high...民主党人不愿与一位有史以来民众支持率最高的总统较...