肉眼鉴定 meaning in English

eye assay
megascopic determination
visual inspection

Naked eye appraise , should it consider synthetically to take to every characteristic , can t watch a bit only
肉眼鉴定，对各特征要综合考虑，不能只看一点。
Occupy very important position with d jade in ancient jade articles , determine there are a lot of methods of the ancient jade , have naked eye determine , mineral determine , chemistry determine , etc . mainly
和阗玉在古玉器中占有十分重要的地位，鉴定古玉的方法很多，主要有肉眼鉴定法矿物鉴定法化学鉴定法等等。
Appraise naked eye about jade quality of each jade article not ancient , can physical property against it , for instance quality , color , gloss , transparency , etc . are observed , judge the jade kind tentatively
对一件古玉器的玉质进行肉眼鉴定，可以对它的物理性质，如质地颜色光泽透明度等进行观察，初步判断玉质种类。