black- dyeing

基本解释

The gallic acid hair dye is used for black-dyeing of human hair.
該沒食子酸染發劑用於人發的染黑。
ip.com
The dyeing characteristics of Leather Black LR-V are studied and the penetration property of different dyestuffs are investigated by leather chromatoplate.
研究了被認爲是無致癌性無禁用偶氮染料皮革黑LR V的染色性能，用皮革色譜板對比研究了染料的滲透性。
Leather special black LR-N is a noncancerogenic dyestuff instead of benzidine dyes. The dyeing properties were studied by compared experiments. And the most suitable dyeing route was settled.
皮革黑LR- N是無致癌毒性的聯苯胺的代用染料，通過對比試騐，研究了其染色性能，竝找出了用該染料染山羊皮服裝革的最佳工藝。