single sashed window单框格窗
double sashed window双层升降窗
single sashed window WESTBANK单框格窗
two-sashed window双扇窗
N-COUNT（可数名词） A sash is a long piece of cloth which people wear around their waist or over one shoulder, especially with formal or official clothes. 腰带; 背带
She wore a white dress with a thin blue sash.
她穿着一条白连衣裙，系着一根蓝色的细腰带。
N-COUNT（可数名词） a frame that contains the panes of a window or door 框
V（动词） to furnish with a sash, sashes, or sash windows 用带子装饰; 用框格窗装饰