Reflectical Furnace Smelting and Thermodynamic Analysis about the Dross Produced by the Smelting Lead Pot
熔铅锅产浮渣的反射炉生产与热力学分析

but real gold can only be found by removing impurities and extracting it from the dross that contains it.
而真金惟有淘尽黄沙，剔除杂质之后才能得到。

Only by innovation can we discard the dross in our traditional heritage and thereby advance with the times.
惟有创新求变，才能去其糟粕，与时俱进。

Scaleup Test Study on Preparation of Ultrafine Active Zinc Oxide by Comprehensive Utilization of Zinc Dross
综合利用锌浮渣制备超细活性氧化锌的扩大试验研究

Ritual songs are the combination of the good and bad songs in which there coexist the dross and the essence.
仪式歌良莠交杂, 精华与糟粕并存。

The dross problem is caused by the formation of magnesium oxides and sulfides resulting from the Mg treatment.
浮渣是由镁处理中形成的镁的氧化物和硫化物所造成的。

We need to discard the dross and keep the essential parts of a book, and to draw inferences by analogy when we are reading it.
我们阅读文章要去芜存菁, 举一反三。

Study on Gold and Silver Recovery from the As Cu Pb Alloy Produced by Copper Dross Smelting with Soda Lead Concentrate in a Smelter
从浮渣铅精矿熔炼产的合金中回收金银的试验研究

The production and filterability of the dross in the floatations asWell as the treatments for the dross are studied in experiments.
并探讨生产过程中浮渣的处理方法

For removing dross through converting dross back to solder from solder pot or wave soldering machine， and greatly lower down the solder oxidization.
可用于锡炉和波峰焊中锡渣的还原，大幅降低锡的损耗。

discard the dross and select the essential, eliminate the false and retain the true, proceed from the one to the other and from the outside to the inside
去粗取精, 去伪存真, 由此及彼, 由表及里