查询词典 reagent

Because attraction between agent and reagent at all instants varied, with inverse proportion of increase and decrease, with incessant circular extension and radial reentrance.

因为起作用者和被起作用者之间的吸引力无时无刻不在发生着变化，而这又与持续不断的环状扩张和放射再突入的增减形成反比例。

The turbidity change characteristics of sodium resinate solution was studied at the existence of calcium ions. The effect of ACS, a kind of heavy metal ion complexing reagent at different temperature, pH, dosage of ACS, and adding order on the solution turbidity was investigated in this paper.

研究了树脂酸钠在Ca(上标 2+)存在下的溶液浊度变化特点，分析了不同反应温度、溶液的pH、ACS用量及添加顺序等工艺条件对多价金属离子络合剂ACS控制树脂酸钠的影响。

Affecting behaviors of H3BO3, NaOH and PVA are studied. The optimum test conditions are as follows: 10 mL of 2%H3BO3, 10 mL of 1 mol/L NaOH, 1 mL of Rochelle salt solution, 0.16 mL of 5%PVA, 1 mL of Nesslers reagent solution, and the reaction time is 10 min.

对H3BO3，NaOH和PVA的影响规律进行了研究，提出了最佳实验条件：以2%H3BO3溶液作吸收液，1 mol/L NaOH溶液10 mL，罗谢尔盐溶液1.00 mL，5%聚乙烯醇 0.16 mL，纳氏试剂1.00 mL，反应10 min。

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

The effect of functionalization reagent on the activity of immobilized ruthenium complexes synthesized in-situ was investigated.

考察了不同试剂功能化的SiO〓对原位合成固载Ru催化剂上scCO〓加氢反应活性的影响。

Hence, it\'s significant for us to employ a high sensitive derivatization reagent for saccharide analysis in actual work.

因此，继续研究开发新的高灵敏衍生化试剂及方法有着重要意义。

Leaching of Scandium From Scandium Concentrate by HCl and 7~# reagent

其盐酸盐为白色结晶性粉末，熔点223～226℃。

The condition experiments of leaching scandium from scandium concentrate with HCl and 7~ reagent is carried out.

进行了盐酸加助溶剂浸出钪精矿的条件试验，得出其最佳工艺条件为：盐酸质量浓度35.3 g/L，液固体积质量比2.5∶1，浸出温度90℃，浸出时间10 h，物料粒度小于0.043 mm，加7#助浸剂，用量为40 g/t。

That the method is scatheless, strength-controlled, without the requirement for additional reagent has not been found is one of the reasons.

本文利用飞秒脉冲激光刺激体外培养的星形胶质细胞，诱导了细胞内的钙升高。

After membrane separation, the SDF purity was up to 86.68%. This methodobviously reduced the reagent.

经膜分离处理以后，SDF的纯度达到了86.68%，并且大大节省了醇析试剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。