Objective to compare impregnation, extraction back to normal, continuous circumfluence, ultrasonic extraction, complex method of extraction of berberine hydrochloride in the Chinese extraction rate.

目的比较浸渍法、一般回流提取法、连续回流法、超声提取法、复合方法提取黄连中盐酸小檗碱的提取率。

youdao

It is ripe in technology and doable in practice that one old condensing turbine with proper parameter is remade to be postposition turbine of the back extraction pressure turbine.

选取参数适当的旧凝汽式机组改造为背压机组的后置机在技术上是成熟的，在实际应用上也是可行的。

youdao

Instead of clearing away the remnants of the extraction of resources left here, the site is given back to residents and visitors as a nature theme park and event setting.

本设计没有移除场地内采矿时（页岩开采）的遗留地貌，而是通过适当梳理、改造、增设配套设施，向居民和游客提供自然主题公园，展示其历史背景。

youdao

It has put in place a rehabilitation program that aims to reshape the dunes and bring the forest to its pre-mining state by putting the indigenous plants back into the ground after the extraction process.

CNN: South Africa dune mining whips up sandstorm