磷化

Two kinds of water-soluble biomimetic chitosan derivatives with a phosphoramide linkage between glucosamine and choline were prepared through Atherton-Todd reaction under the mild conditions, including zwitterionic phosphorylcholine bound chitosan and acetyl-phosphorylcholine bound chitosan with positive charge. The interaction between chitosan derivatives and calf thymus DNA were inversigated by UV alsorption spectra and circular dichroism spectra.

采用Antherton-Todd反应制备了两种水溶性的磷酰化壳聚糖仿生衍生物：两性的N-磷酸胆碱磷酰化壳聚糖和带正电荷的N-乙基磷酸胆碱磷酰化壳聚糖，并用紫外吸收光谱和圆二色光谱研究了两种胆碱磷酰化壳聚糖衍生物与小牛胸腺DNA的相互作用。

The result indicated that: the amount of the excess HF formed direct ratio to the yield of phosphorus pentafluoride and the optimum amount of the excess HF used is about 35%; the trickling rate of oleum shouldnt make the temperature of hexafluorophosphoric acid exceed 25 ℃ and the amount of oleum is 110% to 125% that of stoichiometry so that the content of phosphorus pentafluoride can be achieved 90%; the time and temperature of heating hexafluorophosphoric acid influenced both the yield and the content of phosphorus pentafluoride, and the optimum time should be about 30 minutes and the proper temperature was 148 to 153℃; when alcohol used asrefrigerant, the content of phosphorus pentafluoride was 94.03%, and the content can be up to 97.38%, provided that using liquid nitrogen as refrigerant.

通过实验发现，氟化氢用量与五氟化磷的产率成正比，最佳过量百分率宜在35％左右；发烟硫酸的滴加速度不能使中间产物温度大于25℃，发烟硫酸用量大于理论量10％～25％时，得到的五氟化磷纯度高于90％；六氟磷酸的加热温度对五氟化磷的产率和纯度均有影响，宜在148～153℃的范围内，加热时间应在30分钟左右；用工业酒精做冷凝介质得到的五氟化磷纯度最高只能到达94.03％，使用液氮做冷凝介质可以使五氟化磷的纯度达97.38％以上。

With the formal processing of plating production lines and advanced plating production process, the plant has 28 production plants, a research institutes, are: plating additive production, copper, nickel, chrome, zinc, phosphate, oxidation, etc..

拥有正规的电镀加工生产线及先进的电镀生产工艺，厂内设有28个生产车间，一个科研所，主要有：电镀添加剂生产、镀铜、镀镍、镀铬、镀锌、磷化、氧化等。

The company sells aluminum alloy, steel, copper and aluminum compound, aluminum compound radiator elegant appearance of novel, surface treatment by phosphating using special plastic electrostatic spraying, spraying process is not rigorous to ensure that the spray does not blast off from, the Company Xinjin anti-corrosion treatment equipment within the vacuum will be filling three anti-corrosion materials, this technology to further enhance adhesion of anti-corrosion materials, eliminating the dead-end coating, the coating process to prevent the bubble wall formation enhances the adhesion within the anti-corrosion, greatly extended the radiator life.

本公司销售的铝合金，钢质、铜铝复合、钢铝复合散热器外观新颖雅致，表面经磷化处理采用专用塑料静电喷涂，喷涂工艺严谨确保喷涂不脱落不爆起，本公司新进内防腐真空处理设备将防腐材料三次灌装，此工艺进一步提高防腐材料的附着力，消除了涂装死角，防止了涂装过程中管壁气泡的形成，增强了内防腐的附着力，大大延长了散热器的使用寿命。

To introduce the production process of spring steel wire with continuous line from surface treatment to drawing.

介绍表面处理、拉拔连续生产线生产弹簧钢丝的工艺，从酸洗、磷化涂层、生产场地、操作规程及废酸的处理等方面进行可行性分析，制定出生产工艺并进行试生产，生产出合格产品。

The factory set up since 1992, has been committed to the casing hot galvanized wire and cable products bridge the research and development, is now owned from billet steel rolling, pickling Phosphating, points, hot galvanized, electro-galvanized Laguan molding and other large and comprehensive and mature product line.

本厂自1992年成立以来，一直致力于热镀锌电线套管及电缆桥架系列产品的研究与开发，现已拥有从胚料轧钢、酸洗磷化、分条、热镀锌、电镀锌及拉管成型等大型综合性成熟生产线。

During grain storage, ALP was divided into as fumigating pharmaceutical after sealing in order to store at low dosage. When the gas composition mensurated, using the rubber stopper which with double hole to get back PH3. In the gain bulk this method can retain the concentration of PH3, extend the period of validity, disinsection and sterilization, ensure safety of grain stored .

粮食在储藏过程中，粮堆密闭后投入磷化铝片剂进行低剂量保管，在测定密闭粮堆内的气体成分过程中，用双孔橡皮塞将PH3气体回收到粮堆内，使粮堆内更好地保持PH3浓度的含量，延长其有效期，起到杀虫杀菌的作用，达到安全储粮的目的。

Are set processing, production and sales of integrated enterprise, Main specifications of the dual-head models to stay plate Plum wrench, dual-purpose wrench (semi-parabolic / wide parabolic), active wrench (Zhanhua Plastic / Phosphating / calibration / chrome), a full range of instrument sets sleeve, the sleeve head, then a long shot, short take-under, ratchet wrenches, Freedom Next, slide the first handle rod afterburner, universal joint, the two sides bend Handle, Express±ú, large sliding head, curved handle, L-type wrenches, tire sleeve, saw blade, circular saw blades and other products, high-quality carbon steel and medium carbon steel.

山东世达机械工具有限公司是集加工，生产，销售为一体的综合性企业，主营各种规格型号的双头呆扳梅花扳手、两用扳手、活络扳手（沾塑/磷化/刻度/镀铬）、全系列套筒组套工具、套筒头、长接杆、短接杆、棘轮扳手，自由接、滑行头手柄、加力杆、万向接头、双方弯柄、快速摇柄、大滑行头、弯柄，L型扳手、轮胎套筒、锯条、圆锯片等一系列产品，产品选用优质中碳合金钢和中碳钢。

After de-oiling、rust-removing and phosphorization,the surface of corrugated oil tank would be painted with three-proof paint (water-proof、moisture-proof、salt-fogproof),through which it can be operated under production condition of metallurgy or petrifaction etc.

波纹油箱表面经去油、去锈、磷化处理后用三防漆涂装，适合在：台金、石化等生产环境下使用。

The phosphine concentration and distribution were mainly affected by the organic phosphorous, the redox potential and the sediment composition.

磷化氢在沉积物中的含量分布主要受沉积物中有机磷含量、氧化还原电位及沉积物的组成等多种因素共同的影响。

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。