Reductant in the reaction of elements in valence increased.

在反应中还原剂中元素的化合价升高。

A kind of reductant compound in solid state has proved itself effective.

通过大量的实验,找到了一种固态复合还原剂.

The labeling yield is about 45% using sodium ascorbate as reductant;

采用抗坏血酸钠为还原剂时，标记率为45％；

The effect of the different types of the reductant and water-carrying agent on the yield was investigated.

考察了不同还原剂和带水剂对反应收率及产品质量的影响。

In the later period the reduction rate is independent of heating rate and the kind of coal used as reductant .

在传热控制阶段，还原速度与加热温度和作还原剂的煤种无关。

Methods The acidity of the solution and preparation method of reductant were changed, and the optimum analysis conditions were discovered.

改变溶液的酸度及还原剂的配制方法，找出最佳分析条件。

The carbon steel-water heat pipe with this reductant works very well, and its life will be up to 6~8 years.

用该还原剂技术的碳钢-水热管，工作性能稳定，寿命可延长至6～8年。

Therefore, the deposit using sodium hypophosphite as reductant was more suitable for the industries which had a relatively low requirement on conductance.

因此，次磷酸钠为还原剂的化学镀铜工艺更适宜应用于对导电性要求相对较低的行业。

In the BF raceway, the sophisticated chemical reactions among the gases and the cokes create reductant CO with high temperature for the BF smelting.

高炉回旋区内，焦炭颗粒与气体之间以及气体内部之间发生复杂的化学反应生成一氧化碳等高炉冶炼所需的高温还原剂。

The thermaloxydative aging properties were determined on the NR vulcanizates filled with 3 types of clays which were treated by reductant and strong acid and different metal compounds were added in.

通过还原剂、强酸及添加金属化合物的方法处理3种粘土，并制备相应的粘土填充NR硫化胶（简称粘土填充胶）进行热氧老化性能测试。