查询词典 formaldehyde

Test of electrochemical methods Benzylidene acetone, formaldehyde, compound additive D, ammonium metavanadate solution of acid sulfate tin polarization curves, test ammonium metavanadate on the open circuit potential acid sulfate solution of tin.

用电化学工作站测试分析苄叉丙酮、甲醛、复合添加剂D、偏钒酸铵对酸性硫酸盐镀锡溶液的极化曲线的影响，测试偏钒酸铵对酸性硫酸盐镀锡溶液开路电位的影响。

Benzylidene acetone desorption potential acid sulfate tin plating solution is very close to the ideal desorption potential; Benzylidene acetone, formaldehyde can regulate the desorption potential role and can increase the current density range; Composite additive D can make acid sulfate tin plating solution in the hydrogen produced during the rapid detachment; Ammonium metavanadate can catalyze Sn4+ and restore to Sn2+, and then make solution stability.

苄叉丙酮的脱附电位很接近酸性硫酸盐镀锡溶液的理想脱附电位；甲醛具有调节苄叉丙酮脱附电位的作用，并且能够增大电流密度范围；复合添加剂D能够使酸性硫酸盐镀锡溶液在电镀过程中产生的氢气迅速脱离；偏钒酸铵能够催化Sn4+还原为Sn2+，从而使镀液稳定。

Formaldehyde Sodium Bisulphite??

羟甲基磺酸钠 870-72-4 详细

In the second chapter , four new tetra-O-substitution of calix[4]arene derivatives are synthesized by condensation and two steps of substitution reaction from p-tert-phenol and formaldehyde.

本文第二章对Calix[4]arene进行了功能化，通过三步反应，合成了四种新的混醚。

Youngs modulus of the modified wheat protein cross-linked with formaldehyde was the highest when caprylic aldehyde content was 2%.

甲醛交联改性蛋白质塑料的模量在辛醛含量为2％时最高。

When caprylic aldehyde content was at the range of 0～4%,the water vapor permeability of the modified wheat protein cross-linked with formaldehyde increased. When the caprylic aldehyde content increased,the water vapor permeability decreased because of the chemical modification.

辛醛含量在0～4％范围增加时，甲醛交联的改性蛋白质塑料的透湿性增强；当辛醛含量继续增加，透湿率有一定程度的下降。

Compared with the Epoxy resorcinol-formaldehyde resin pretreatment system and Maleic anhydride pretreatment system developed by Xusigui, the 40% carbolated styrene-butadiene latex system can keep the composite"s properties and reduce the cost of pretreatment and simplify the pretreatment technology; especially to the HST 2073 latex system, the composite"s mechanics properties are improved greatly. Secondly, the composite"s comprehensive properties and interface performance are improved by reinforced with short fiber grafted with rubber in the surface. Thirdly, to simplify the production technology of composite, we add TKM-M and RF-90 as adhesive agent to the composite blended in an internal mixer, so as to the composite can be used to industry widely, then the effect of the amount adhesive agent on the composite"s properties and interface adhesive performance was studied, from the experiments the optimum amount of adhesive agent was deduced.

其中采用特软羧基丁苯胶乳预处理短纤维的方案，降低了预处理成本，相对许泗贵的低分子环氧和马来酸酐体系来说，预处理工艺大大简化了，而材料的力学性能保持良好，尤其是 HST 2073A 胶乳预处理体系，力学性能有较大幅度的提高；第二，通过对尼龙短纤维表面进行接枝橡胶分子链预处理，改善了复合材料的界面粘合性能，复合材料的综合性能也得到了相应的提高；第三，为了简化复合材料的生产工艺，使复合材料的应用得到工业化推广，我们选用TKM—M和RF—90长效增粘剂，直接加入短纤维橡胶复合材料中，采用密炼工艺，探讨了增粘剂的用量对复合材料界面粘合以及性能的影响，得出了增粘剂在复合材料中的最佳用量。

Formaldehyde-free fiberglass wool board duct liners are manufactured from inorganic glass fibers bonded with a poly acrylic resin.They are manufactured to stand abuse ,provide a cleanable,fire-resistant interior surface and have been designed to minimize friction loss.

无甲醛环保玻璃棉风管内衬是由粘结了丙烯酸热固性树脂的无机玻璃纤维制造而成，经久耐用，提供可清洁的防火内表面，并将摩擦损失降到最低。

Aquatic products ; Antibiotics ; Heavy metal ; Formaldehyde ; Clonorchis sinensis ; Vibrio parahaemolyticus

水产品；抗生素；重金属；甲醛；肝吸虫；副溶血性弧菌

The total RNA from brain tissue of substantia nigra of PD rats is extracted at the 1st, 2nd, 4th and 8th week and comparison is made between it and that from normal rats. The total RNA, after RNA formaldehyde degenerated sepharose electrophoresis and separation and Northern transfer, is adsorbed unto colloxylin membrane. Then ECL labeled Selenoprotein P and an unknown gene fragment are used as probes to hybridize with the RNA on the colloxylin membrane. And the hybridized result is obtained with enzyme-linked immunosorbent assay. Finally, analysis of OD is made using ONE-Dscan software.

分别提取1周、2周、1月、2月的帕金森大鼠（各8只）黑质区脑组织总RNA，并取相对应时间的正常大鼠的脑组织总RNA作为对照，经RNA甲醛变性琼脂糖凝胶电泳分离后，通过Northern转移，将其吸附在硝酸纤维素膜上，然后利用ECL标记的Selenoprotein P和一段未知基因为探针，与硝酸纤维素膜上的RNA分子进行杂交，再通过显影取得杂交的结果，应用ONE-Dscan软件进行光密度值分析。

We have limited budget let me know if you can do this competitively.

我们有限的预算让我知道如果你能做到这一点竞争力。

We don't know how other critters breathe--lizards, for example.

我们还不知道诸如蜥蜴之类的动物如何呼吸。