1.Students are very hard, will soon make lixivial.
学员们都很认真,很快就把握了技术要领。
2.Gold and silver screen printing ink to note the following lixivial.
网印金银墨要注意以下技术要领。
3.Technologic Essentials of Improving the Lixivial Rate in Distilling Gold with Cyanide solution as solvent
提高池浸提金浸出率的几个技术要领