铵的

If as a result of body shell keycap stuck with the key causes of the "key card" failure, may be key in the cap and put a gasket between the pads can be used稍硬some plastic (such as floppy disk jacket abandoned) made, its size is equal to or slightly larger than the key body size, and location by the rod through the ammonium can open a free passage under the square hole, in accordance with its set of poles, the plug cap; use this pad chip cap with the key body to prevent stuck, you can repair button; If as a result of spring fatigue, shrapnel resistance causes large card key failure, then the Special button to open the body, a little stretching to restore flexibility to reset the spring; Remove the key precursor to the resumption of shrapnel.

若是由于键帽与键体外壳卡住的原因造成"卡键"故障，则可在键帽与键体之间放一个垫片，该垫片可用稍硬一些的塑料做成，其大小等于或略大于键体尺寸，并且在按杆通过的位置开一个可使铵杆自由通过的方孔，将其套在按杆上后，插上键帽；用此垫片阻止键帽与键体卡住，即可修复故障按键；若是由于弹簧疲劳，弹片阻力变大的原因造成卡键故障，这时可特键体打开，稍微拉伸复位弹簧使其恢复弹性；取下弹片将键体恢复。

Sodium fatty alcohlo ether sulfate, S-80, fatty alcohol-polyoxyethylene ether and S-60 resulted in slow photodecomposition of rotenone in aqueous solution revealing a photo-extinction effect, sodium dodecylberzenesulfonate, tween-60, hexadecyl trimethyl ammonium bromide and poyl vinyl pyrrolidone made the photolysis of rotenone in aqueous solution fast showing an obvious photosensitized effect.

室内条件下研究了鱼藤酮水溶液存在不同表面活性剂时，鱼藤酮的紫外光降解，结果表明：脂肪醇聚氧乙烯醚硫酸钠、司本－80、长链脂肪醇聚氧乙烯醚和司本－60对鱼藤酮在水溶液中的光解速率表现出显著的光猝灭降解效应；十二烷基苯磺酸钠、吐温－60、十六烷基三甲基溴化铵和聚乙烯吡咯烷酮对鱼藤酮在水溶液中的降解表现出一定程度的光敏化作用。

Two-dimensional multilayered complex of Octabenzenesulphonate Polyhedral Oligomeric Silsesquioxane modified by alkyltrimethylammonium bromide C_nH_(2n+1N(CH_3)_3Br, CnTAB, where n denotes the carbon number in the alkyl chain via ion-exchange reaction.

一方面，使用多电荷阴离子的八磺酸根POSS和十六烷基三甲基溴化铵表面活性剂在水溶液体系里面进行离子交换反应，利用有机-无机不同的相似相容性质通过自组装的手段，得到具有规整的二维层状结构的杂化材料。

The content of ammonium nitrogen demonstrates a significantly increasing tendency with the increase in freezing and thawing tensity and frequency.

随着冻融强度的加大和冻融频次的增加，土壤中的铵态氮的含量呈现出显著增加的趋势。

It was shown that the main compositions of the stones were uric acid dehydrate and ammonium urate, so we derived the mechanism of stone formation from the metabolic process of the two stone compositions, meanwhile, we raised some advices on the diagnosis and the treatment of the disease.

目前已知，这种结石的成分主要是二水尿酸和尿酸铵，所以本文通过这两种成分的代谢过程来逆向推导这种特殊结石形成的过程，同时也提出一些相关的诊断和治疗上的建议。

It is very important to reduce the trendence that strenght of paper is lower and lower in the recycling of wastepaper .

减轻废纸在回收利用过程中的强度降低的趋势对废纸的再生循环利用有着极其重要的作用，本文对季铵型阳离子淀粉在废纸回用过程中的增强效果进行了初步研究。

The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied. The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate, and their yields were 86.7% and 89.3% respectively.

同时就溴化反应中的溶剂以及甲酰化反应中的氧化剂对两类反应的影响分别进行了研究，结果表明溴化反应的最佳溶剂为四氯化碳，反应产率达到86.7%，甲酰化反应的最佳氧化剂为硝酸铈铵，产率达到89.3%。

The influences of inter-crosslinker and ratio of polyurethane-polyether to acrylic resin on the hydrophilic coating were investigated.The experimental data show that when the initiator is ammonium ceric nitrate and the inter-crosslinker is divinylbenzene in the preparation of polyurethane-polyether,the amount of ...

实验结果表明，在聚氨酯-聚醚树脂的制备中，用硝酸铈铵作引发剂，用二乙烯苯作内交联剂，在丙烯酸树脂的制备中，引发剂量为单体总质量的1.00%，聚氨酯-聚醚树脂与丙烯酸树脂的质量比为15∶1，制备的树脂转化率高，涂料亲水性能优异。

To the best of our knowledge, the relationship of surface acitivity of catanionic surfactant with temperature has not been revealed, and the catanionic surfactant has not been employed in organic reaction also.In this work, surface tensions of equimolar cetyl trimethylammonium bromide-sodium dodecyl sulfate at different temperatures were determined and compared with those of corresponding individual surfactants.

为扩展复配体系的应用，本论文选取等摩尔十六烷基三甲基溴化铵—十二烷基硫酸钠复配体系及它们的单一体系为研究对象，观察到随着温度的升高，CTAB及SDS表面活性变化不大，而等摩尔CTAB-SDS的表面活性显著增强，这是由于升温减弱了其强烈的静电作用，并通过溶解性实验结果进一步证实。

For the first time, enantiomers of C2-symmetric 1,1 -spirobiindane-7,7'-diol were resolved with crude menthyl chloroformate by phase-transfer catalysis in the presence of tetrabutylammonium bromide. The reaction was carried out at 0℃-rt. The diastereomers of SPINOL bis-menthyl carbonate can be separated by simple crystallization using alcohol. The hydrolysis of the diastereomers was carried out via aqueous NaOH/EtOH solution.

首次通过相转移催化的方法对螺双二氢茚二酚进行了有效的拆分，用L--氯甲酸薄荷醇酯做拆分剂，以四丁基溴化铵为催化剂在0℃-室温下进行酯化反应生成非对映体衍生物，以乙醇作溶剂，通过重结晶的方法分离衍生物，在水-乙醇混合溶剂条件下，用强碱NaOH或KOH分别水解，制得相应的光学纯度大于99%ee的两个异构体SPINOL，其中总收率：--SPINOL，78.2%；--SPINOL，80.6%。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。