查询词典 ions

Unfortunately, there are far more harmful positive ions than negative ions in our daily life.

不幸的是，我们还有更多的有害比在我们的日常生活负离子，正离子。

The chloroform solution of PMNHA extracts vanadium rapidly from 2.25―4.50mol/L hydrochloric acid solutions as a violet complex. The absorption maxmium of the violet complex is at 540nm. Many diverse ions, especially considerable quantity of Ti ions do not interfere with the determination of V.

该试剂的三氯甲烷溶液能很快从2.25―4.50mol/L HCl中萃取钒的紫色配合物，其配合物最大吸收在540nm，很多外来离子，特别是大量的钛不干扰钒的测定，钒含量在0―28μg？

Aldol condensation of aldehydes with α-H in the base-catalyzed formation of carbon ions, and carbon ions as nucleophiles on aldehydes and ketones to increase the pro-nuclear ...

羟醛 缩合具有α-H的醛，在碱催化下生成碳负离子，然后碳负离子作为亲核试剂对醛酮进行亲核加。。。

In the second chapter, twelve compounds constructed by arenedisulfonates and metal ions such as alkali, alkaline earth and transition metal ions have been synthesized and structurally characterized.

第二章描述了在水溶液条件下芳烃二磺酸根离子与碱金属离子、碱土金属离子和过渡金属离子形成的十二个化合物的结构。

Alkaline water is water with more OH- ions than H+ ions.

碱性水是水多羟基离子比 H +离子。

Then, lithium ions reacted with Sn to form Li-Sn alloy. In charge process, lithium ions extracted from Li-Sn alloy.

由球磨SnS的电化学性能比较得出：随着球磨时间的增加，放电容量增大，循环性能越好。

Tourmaline negative ions produced by micro-current, and far-infrared to improve human health and the living environment is very beneficial to use products containing tourmaline, its micro-current flow of 0.06mA can complement and balance the body's bio-electric; the dissemination of negative ions can balance the human body fluids, so that acidity of body fluids alkaline; its release could play a far-infrared expansion of capillaries to promote blood circulation, activate cells To promote the role of metabolism and so on, while blocking harmful electromagnetic radiation on the human body injury.

电气石所产生的负离子、微电流和远红外线对改善人体健康和生存环境十分有益，使用含有电气石的产品，其流动的0.06mA微电流，可补充和平衡人体的生物电；其散发的负离子可平衡人体体液，使酸性体液碱性化；其释放的远红外线可起到扩张毛细血管、促进血液循环、活化细胞、促进新陈代谢等作用，同时可阻断各种有害电磁辐射对人体的伤害。

This functioned as a selective bridge, permitting the passage of positively charged sodium ions, but not negatively charged chloride ions.

它可以作为有选择的桥梁让带正电的钠离子通过，同时阻止了带负电的氯离子。

Next, Dr LaVan and his colleagues installed a protein called alpha-hemolysin into the protocell membrane. This functioned as a selective bridge, permitting the passage of positively charged sodium ions, but not negatively charged chloride ions.

接下来，拉文和他的同事们在原细胞的细胞膜中加入了一种叫阿尔法溶血素的蛋白质，这样就建立了一个选择性的通道——允许正极的钠离子通过，却阻止负极的氯离子。

In order to raise the photocatalytic activity, TiO2 was modified by doping Bi ions and Eu ions using combustion method.

为了提高光催化剂的活性，用燃烧法制备了Bi离子掺杂TiO2和Eu离子掺杂TiO2纳米光催化剂。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐