查询词典 hydroxide

Safrole oil is nowadays and will be still the main raw material for heliotropine manufacture.Because catalyzation method with potassium hydroxide has merits of cheap material and simple technique , it becomes the sole method to produce isosafrole in domestic factories.

由于氢氧化钾催化黄樟油素异构化法具有原料方便、工艺简单特点，故它是国内工业生产异黄樟油素的唯一方法，但存在收率低(收率小于90％)、污水量大的缺陷，目前一直未解决。

Orthogonal experiment under special condition showed that modifier M has marked effect on properties of no bake sand. Other factors such as modifier B,phosphate concentration and aluminum hydroxide have some impact on properties of binder. It can be found by experiments that strengths of no bake sand are raised notably by binder that modified by modifier B. Modifier B can reduce the strength of no bake sand at high room temperature apart from condition of low room temperature that it can accelerate the reaction and strengthen the sand. Modest content of modifier M in binder has some improvement to anti-wettability of sand. But modifier B has not such notable effect. Electronic microscope shows that near cracks in no bake product there are fibrous shape substances formed when the samples are moistured in high humidity air for sometime.

通过改性剂B对粘结剂自硬砂的性能影响试验发现，改性剂B能显著提高粘结剂自硬砂的强度，在0℃左右很低的环境温度下改性剂M有利于提高自硬砂的反应速度和砂型强度外，但在较高环境温度下，改性剂M均降低粘结剂自硬砂的强度，但是适量的改性剂M有利于改善自硬砂的抗吸湿性，而改性剂B对于改善自硬砂的抗吸湿性的作用不如改性剂M明显，电镜观察发现抗吸湿性较好的自硬砂在高湿度下存放一定时间后，在粘结膜裂纹处会形成一种绒毛状物质，该物质对裂纹具有愈合作用，这种绒毛状物质中具有改性剂M中的某种成分，且含量很高，由此说明改性剂M对提高抗吸湿性有利。

Sodium hydroxide in order to enable complete saponification Handmade Soap after making necessary to place one to two months Time to complete saponification.

为了使氢氧化钠完全皂化，手工皂制作后必需放置一至两个月的时间来完全皂化。

Self-solidifying hydroxyapatite/2.5% norvancomycin composite and self-hardening calcium hydroxide were applied as pulp capping agents in the experimental and control groups, respectively.

实验组用自凝羟基磷灰石/2.5%去甲万古霉素复合物作为盖髓剂，对照组用可硬化氢氧化钙作为盖髓剂。

In the first part, two novel methods were proposed for the determination of three kinds of organogermanium compounds βcarboxyethylgermanium sesquioxide,β- carboxyethylgermanium sesquioxide and di-(β-carboxyethyl) germanium hydroxide by using high performance ion-exchange and ion-exclusion chromatography.

第一部分采用高效离子交换和离子排斥色谱法，建立了两种测定三种有机锗化合物β-羧乙基锗倍半氧化物、β-羧乙基锗倍半氧化物、二-锗氢氧化物的新方法。

By silver nitrate solution and the role of sodium hydroxide solution obtained.

由硝酸银溶液与氢氧化钠溶液作用制得。

Nanometer sized needle like and spherical shaped zinc oxide was prepared by using single step hydrolysis method directly,zinc chloride and sodium hydroxide as raw materials.

以氯化锌和氢氧化钠为原料，采用直接水解一步法制备了针状和球形纳米氧化锌。

You can also add softener; the typical softeners are sodium bicarbonate and sodium hydroxide.

也可采用加入软化剂方法，常用的软化剂为碳酸氢钠和氢氧化钠。

Can Aluminium Hydroxide be Dissolved in Excess Sodium Carbonate Solution?

氢氧化铝能溶于过量的碳酸钠溶液吗？

Results The major occupational hazards in the expansion project were sulfuric acid, hydrochloric acid, ammonia, sodium hydroxide, cyanide, nickel and its compounds, formaldehyde, organic solvent and noise. Many protective measures would be carried out in this expansion projects.

结果该建设项目在生产过程中存在的主要职业病危害因素有硫酸、盐酸、氨、氢氧化钠、氰化物、镍及其化合物、甲醛、有机溶剂、噪声等，根据有关规定企业拟采取相应的措施。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。