n.染料
A blue dyestuff can be obtained from the woad plant. 菘藍(lán)屬植物可以造藍(lán)色染料。
Fiber reactive dyes are from true chemical bounds between dyestuff and fiber. 纖維活性染料來源于染料與纖維之間形成的真正化學(xué)鍵。
染料
