1)  two steps
二段
1.
In the process of production APT with technology of alkali decomposition-extraction-evaporative crystallization, the process of two steps of removing Mo and Sn is used to deal with complex tungsten minerals with high Mo and Sn.
在碱分解-萃取-蒸发结晶制取APT工艺中,用二段除钼锡法处理高钼高锡的复杂钨矿物原料,即:将经典的MoS3沉淀除钼法与选择性沉淀除杂法相结合,先用经典的MoS3沉淀除钼法在Na2WO4溶液中除去大部分的钼,再用选择性沉淀法处理经萃取转型后获得的高锡(NH4)2WO4溶液,以除去其中的钼和锡,钼的总去除率可达97％以上,锡的去除率可达99％以上,在结晶率为95％的情况下,生产出的APT质量达到了GB10116-88APT-0级标准。
2)  two-step purification
二段洗涤
1.
Based on the detailed component and particle size analysis for original salt,through a two-step purification process,the dry base content of purified sodium chloride was larger than 98%,the content of potassium chloride was reduced from 3.
利用青海盐湖工业(集团)公司氯化钾生产过程产生的浮选尾盐进行氯化钠一次精制试验,在对原盐进行充分的成份分析和粒度分析的基础上,通过二段洗涤工艺过程,一次精制后氯化钠干基含量达到98%以上,氯化钾含量从原盐的3。
3)  the second member of Xujiahe Formation
须二段
1.
Fracture is an important controlling factor for the distribution of natural gas reservoirs in the second member of Xujiahe Formation at the south of western Sichuan depression.
裂缝是川西坳陷须二段低渗透砂岩天然气藏分布的重要控制因素。
4)  post curing
二段硫化
1.
The optimum post curing conditions of fluoro rubber blends were determined by changing the temperature and the time.
通过改变不同配方的氟橡胶二段硫化温度和时间,确定了最佳硫化条件。
5)  second hydrogenation
二段加氢
1.
This paper introduce the capability of the catalyzer FH-40A manufacture by Fushun Research Institute of Petroleum and Petrochemicals using in second hydrogenation of pyrolysis gasoline,and introduce the application of the catalyzer FH-40A in Liaoyang olefin plant(6×104t/a unit).
阐述了抚顺石油化工研究院研制开发的新一代轻质馏分油加氢精制催化剂FH-40A的特点及用于裂化汽油二段加氢的反应性能,并介绍了FH-40A催化剂在中石油辽阳石化公司烯烃厂6×104t/a裂解汽油二段加氢装置上工业应用的情况。
6)  two-step cooling
二段冷却
1.
We compared with the one-step and two-step cooling methods of chilled meat through determining the loss of chilled meat.
通过对应用一段冷却和二段冷却方法的冷却肉的冷却温度、损耗的测定和比较,得出二段冷却的冷却肉温度下降较快和肉质损耗低的结论。
参考词条
补充资料：二段培养
分子式：
CAS号：

性质：对于非生长连动型的细胞培养，在第一阶段提供快速生长培养基，在第二阶段提供使其生长不快但有利产物合成的培养基。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。