碱性

When the solution changed from acidic to basic, the chem. shifts of b-15N atom shifted from 366-380 ppm to ~500 ppm, corresponding to an equilibrium shift from hydrazone form to azo anion structure of the dyes.

当样品溶液从酸性转成碱性，β-氮-15原子的化学位移从366-380PPM移到500PPM，相应于从腺型到偶氮阴离子结构。

Many reseach works have been done to prepare the intermediates through hydrogenolysis, acidic and basic hydrolysis.

本论文通过大量实验研究碱性水解、酸性水解和氢解法制备ADHPA的合成方法。

The yields were better when DHPCE with nitro group in meta or ortho position of the benzene ring were hydrolyzed in basic conditions, while the hydrogenolysis and acidic reactions gave very poor yields.

当苯环的间位和对位存在硝基，碱性水解时，在二氢吡啶环的3位引入氯乙醇的酯能得到较好的收率；酸性水解和氢解法则不宜用来合成ADHPA。

Base on the weldability tests , the repair welding procedures of weari-resistant cast steel (abrasion-plates) have been made up , The results show that satisfying repair welding quality can be attained with such welding conditions as the low hydrogenous alkalescent welding rod , preheating and slow cooling , strictly maint.

通过对其焊接性能的试验研究，制定了该类铸钢件的补焊工艺：低氢型碱性焊条，预热与缓冷相结合的工艺措施，严格控制层间温度(250～300℃)及焊接工艺规范，可获得满意的修复质量。

Mechanism of hydrolysis at acid and basic conditions were discussed respectively.

并分别讨论了在酸性和碱性条件下的水解机理分别进行探讨。

Theoretically, the retention equation is derivated for organic amphoteric compounds on cation-exchange column with hydronium ion as eluent ion, in terms of acid -base equilibrium and ion-exchange equilibrium.

首次从理论上导出了有机两性物质在阳离子交换柱上以H〓为淋洗离子时的保留关系式并用实验加以了证实，以此估算了两性物质的碱性离解常数K〓。

And content of Ach was tested by alkaline hydroxylamine method.

用Morris水迷宫法测试小鼠的空间记忆能力，用比色法测定大脑皮质胆碱乙酰转移酶、胆碱酯酶活性，用碱性羟胺法测定乙酰胆碱含量。

The Morris Water Maze experiment was used to measure the learning and memory abilities. The content of ACH was determined by alkaline hydroxylamine.

水迷宫实验观察大鼠学习记忆能力的改变；碱性羟胺比色法测定海马乙酰胆碱含量。

Hypergolic Research of Hydrogen Peroxide with Alcohols Green Bipropellant

系统研究了用于配抄新闻纸的蔗渣碱性过氧化氢化机浆的制浆工艺。

An electroless nickel process with sodium hypophosphite as reducing agents in alkaline bath, which is applied on polyurethane foam substrate, was studied in detail in this paper.

本文采用聚氨酯海绵为基体材料，以次磷酸钠为还原剂，在碱性化学镀镍溶液中对低磷化学镀镍磷合金工艺进行了详细的研究。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失