碱性化

The semiconducting behavior of 304 stainless steel in acid and base solution was studied by utilizing potential-capacitance and Mott-Schottky analysis.

采用电位-电容法及Mott-Schottky分析技术研究了自腐蚀电位条件下304不锈钢钝化膜在酸、碱性溶液中的半导体导电行为。

It was based on the reaction between thiamine and hexacyanoferrate in sodium hydroxide medium to give CL signal,which was enhanced by cetyltrimethyl ammonium bromide.

基于在N aOH碱性中，铁氰化钾可以直接氧化维生素B1产生化学发光，而十六烷基三甲基溴化铵的存在可以大大增强这一化学发光强度，结合流动注射分析技术，在研究并优化化学发光条件的基础上，建立了测定维生素B1的化学发光分析方法。

Ceramic bearings can produce oxidation-ho, silicon carbide, silicon nitride and so on, diameter from 3mm-50mm, precision Machinable P0, P6, P5 level; its performance characteristics are: high temperature, oil-free self-lubricating, acid, alkali and salt corrosion , wear resistance, low noise, insulating diamagnetic, since high-speed operation; metal nano-ceramic bearing its production process for a new generation of high content of nano-particles in the heat and pressure infiltration of metal surface is activated to fill the cracks and pits the metal so that 3-5 micron metal surface is more smooth solid surface, greatly reduce the friction, improve Chennai base metals, and greatly increased the life span of bearings, and its characteristics are: long life (as an ordinary stainless steel bearings 2 -- 10-fold), low noise (as an ordinary stainless steel bearings, 70%), wear-resisting, acid, alkali, salt corrosion, high temperature, load large; ceramic bearing and metal nano-ceramic bearing design and development to meet the needs of the market for high-speed, low - noise, high load, the demand for corrosion-resistant; Machinery Production Department to produce aircraft rod end joint bearing, linear guide bearings, the fuel tank of earrings, plastic bearing, non-standard side bearing components, glass door hardware, such as high-precision control products; and provide CNC machining.

陶瓷轴承可生产氧化镐、碳化硅、氮化硅等，内径从3mm-50mm，精度可加工P0、P6、P5级；其性能特点为：耐高温、无油自润滑、耐酸、碱、盐腐蚀、耐磨、低噪音、绝缘抗磁、起高速运转；金属纳米陶瓷轴承其生产工艺为新一代的高含量纳米级微粒在热和压力的作用下被激活渗入金属表面，填补金属缝隙和凹坑，使金属表面3-5微米表面更光滑坚固，大大降低其摩擦力，提高金属的奈酸碱性，并大大提高了轴承的寿命，其特性为：长寿命（为普通不锈钢轴承的2-10倍）、低噪音（为普通不锈钢轴承的70%）、耐磨、耐酸、碱、盐腐蚀、耐高温、负载大；陶瓷轴承与金属纳米陶瓷轴承的设计开发以满足市场对高转速、低噪音、高负载、耐腐蚀的需求；机械生产部以生产机杆端关节轴承、直线导轨轴承、油缸耳环、塑料轴承、非标端轴承零部件、玻璃门控五金等高精度产品；并对外提供数控加工。

Papers in the experimental part of our literature considered on the basis of the experimental exploration, and podophyllotoxin intermediates with the structural characteristics of a simple pepper aldehyde as the starting material,α,β-unsaturated carbonyl compounds are selective reduction lithium aluminum hydrogen reduction reaction as the key steps to have the Knoevenagel condensation, peracetic acid epoxy between chlorine and alkaline hydrogen peroxide epoxy, DCC condensation esterification reaction of the three podophyllotoxin intermediates.

论文实验部分我们在综合考虑文献的基础上，经过实验摸索，并结合鬼臼毒素中间体的结构特点以简单的胡椒醛为起始原料，对α，β-不饱和羰基化合物具有选择性还原的锂铝氢还原反应为关键步骤，先后经过Knoevenagel缩合，间氯过氧苯甲酸环氧化，碱性过氧化氢环氧化，DCC缩合酯化等反应合成了3个鬼臼毒素中间体。

Native tapioca starch granules were not treated with any alkaline and consequently there was no starch swelling Moreover, Huangllll reported that in preparing CLTS with low DC, except the formation of cross linking tarch molecules with POC13 there were also some esterification between starch molecule and POC13 due to a small amount of POC13 added The introduction of hydrophilic ester bond during the cross linking reaction could induce hydration of starch chains, resulting in easy absorption of enzyme onto starch granule

乡土木薯淀粉颗粒不处理与任何碱性因此没淀粉膨胀此外， huangllll报备clts低直流，除形成交叉连接tarch分子poc13还有一些酯化淀粉分子和poc13 由于少量poc13续引进亲水酯键的交联反应诱使水化的淀粉链，造成容易吸收的酶转入淀粉颗粒

Several common problems in alkaline tin plating on copper foil were listed, for example, the golden yellow passivation film on anode becomes thin, black, and even disappears; the deposit is dark-gray and spongy, and so on.

列举了紫铜箔碱性镀锡过程中出现的几种常见问题，如：阳极表面金黄色钝化膜变淡甚至变黑，镀层呈暗灰色海绵状等。

The amalgamated zinc powder as anode materials used in alkaline zinc manganese dioxide can effectively retrain the gas production from battery itself.

碱性锌锰电池的阳极锌粉，采用汞齐化方法抑制气体的产生具有很好的效果。

Sodium hydroxide, but the soap and glycerin.

氢氧化钠为碱性，直接碰触会伤害肌肤，但是在制作过程中，和油脂、水一起皂化后就不再是氢氧化钠，而是皂和甘油了。

Additional, the meeting after a variety of mineral elements such as some Potassium, zinc are being contained to metabolize inside body in fruit vinegar makes basic material, can prevent haemal acidification, achieve adjust the purpose that soda acid balances.

另外，果醋中含有的钾。锌等多种矿物元素在体内代谢后会生成碱性物质，能防止血液酸化，达到调节酸碱平衡的目的。

These derivatives are readily obtained by alkylation of 2-mercaptopyridine and alkyl halides under alkaline conditions.

这些衍生物可以容易地在碱性条件下通过2-巯基吡啶和卤代烷的烷基化而得到。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷