大盖 meaning in Chinese

large bell

We fired it up five , six years ago
我们大盖5 , 6年前用过
The technique of photography was officially recognised in august 1839 when the french government announced the successful experimentation of daguerrotype , a photographic process with the image made on a light - sensitive silver - coated metallic plate
摄影术是在1839年8月法国政府宣布大盖尔银版照相法( daguerrotype )实验成功而正式面世。