使硫酸化

Electrolyte's surface low inside battery, make polar plate bareness part sulphurs acidify.

电池内部电解液液面低，使极板裸露部分硫酸化。

Strong acids, such as sulfuric acid, hampered from the occurrence of the phenol hydroxylation.

过强的酸，如硫酸、硝酸和盐酸，对苯酚羟基化反应造成危害，使羟基化反应不能发生。

Aniline compounds are used as raw material and reacted with anthranilic acid and then phenyl iodide as alkylating agents to give alkylating products followed by cyclizing with concentrated sulphuric acid to give a N-phenyl-acridone(or 3-ethoxyl-N-phenylacridone).The structure of intermediate and target compound are determined by IR and MS.

以苯胺类化合物为原料，先后以邻氯苯甲酸和碘苯为烷基化试剂进行了N 烷基化反应，再用浓硫酸使其环化制得N-苯基吖啶酮和3-乙氧基-N-苯基吖啶酮，并用红外光谱及质谱仪检测了各中间体及目标产物的结构。

Estrogen can cause fetal congenital heart defects, large vascular malformation, hydrocephalus, cerebral meningocele, visceral malformations, hydrocephalus, meningeal, bulging, visceral malformations, feminization of male fetus, penile deformity , cervical abnormalities, but also easy to cause miscarriage, stillbirth and ectopic pregnancy.

雌激素可引起胎儿先天性心脏缺陷，大血管畸形，脑积水，脑脊膜膨出，内脏畸形，脑积水，脑脊膜，膨出，内脏畸形，男胎女性化，阴茎畸形，宫颈畸形等，还易引起流产，死胎和异位妊娠。2、黄体酮可使妇胎生殖器男性化，出现阴蒂肥大，阴唇吻合等。3、先锋霉素：可通过胎盘屏障碍进入羊水中，对胎儿的安全性有影响。4、如有子宫收缩可引起先兆流产或先兆早产，应去医院请医生处方遵医嘱应用硫酸舒喘灵等舒缓平滑肌收缩的药物直至子宫收缩停止。

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。

In the first stage (230—300℃) the sulphatization of oxides on the one hand and the prevention of acid evaporation loss on the other should be both satisfied.

第一阶段(250—300℃)应滿足使氧化物硫酸化和阻止硫酸蒸汽蒸发逸散損失的双重要求。

Gelena is pretreated by sulphatization, forming a layer of PbSO_4 film on its surface. The film has no effect on arsenic minerals and gelena is depressed during reverse flotation.

通过硫酸化预处理，可使方铅矿表面形成一层PbSO_4覆盖膜，而砷矿物不受影响，从而在反浮选中，方铅矿受到抑制。

In order to minimize the pollution of the environment with waste acids and/or waste acidic salt solution, following measures were taken:(1) Instead of using excess sulfuric acid, sulfonation reaction was carried out in the presence of excess toluene and the water produced during the sulphonation was removed by azeotropic distillation.

在CLT酸生产中，为了使废酸和酸性废盐水对环境的污染减少到最低程度，采取了如下的措施：(1)与使用过量硫酸相反，磺化反应是在过量甲苯的存在下进行，同时用共沸蒸馏方法移出了磺化过程中产生的水。

The Residue on Ignition / Sulfated Ash test utilizes a procedure to measure the amount of residual substance not volatilized from a sample when the sample is ignited in the presence of sulfuric acid according to the procedure described below.

炽灼残渣/硫酸化灰分检测是当根据下面所述的步骤使样品在有硫酸的情况下灼烧后，测量未挥发的残留物质量的方法。

In the second stage (550—600℃) reaction between cobalt and copper oxides and SO_3 dissociated from iron sulphate is initiated.

第二阶段(550—600℃)是利用鉄硫酸盐分解放出的SO_3使鈷、銅氧化物进一步硫酸化。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。