The colour of cocoon silk is greatly related to the kind, time, and density of the added pigment.
The colour of cocoon silk is greatly related to the kind, time, and density of the added pigment.
彩色茧丝的色彩与添加色素的种类、时期、浓度的大小有关。
The colour of cocoon silk is greatly related to the kind, time, and density of the added pigment.
彩色茧丝的色彩与添加色素的种类、时期、浓度的大小有关。