recovery medium

Dithiothreitol ( DTT) could significantly improve the recovery and velocity of frozen-thawed spermatozoa when it was added in the protective medium.

在精子冷冻保存液中加入二硫苏糖醇（DTT），观察复温后精子复苏率、运动速度、测定精子内ATP和精浆内GOT含量。

The Rankine cycle of low boiling medium and its application to low temperature waste-heat recovery in foreign countries are reviewed.

本文介绍低沸点工作介质的兰金循环特点及目前国外运用这种循环方法回收和利用低温余热的情况。

The acid recovery-flocculation process used to treat the black liquid from paper plant respectively was introduced. They fully considered on financial condition and capacity of treatment sewage in small to medium paper plant. The optimum condition selection and engineering analysis of the processes were done.

针对中小型纸厂经济状况、污水处理规模等特点，提出了酸析-絮凝法处理造纸黑液的工艺，确定了最佳工艺条件，并进行了工程分析。

Comprehensive recovery of niobium from Bayan Obo low and medium grade oxide ores using new technique of magnetic separation

白云鄂博中贫氧化矿磁选新工艺综合回收铌的研究

High Cr-Ni stainless steel is widely used in the processing of hot wet-process phosphoric acid, because a passive film on its surface possesses corrosion and erosion resistance and ability of self-recovery in the medium.

高铬镍不锈钢是湿法磷复肥生产装备中常用的材料，它能够经受得住工况介质腐蚀磨损的双重作用，是因为在其表面能形成耐腐蚀和具有自愈能力的钝化膜。