查询词典 ethyl

Determination of methyl ethyl ketone and sec-butanol by gas chromatography was reported.

丁酮在合成抗氧防胶剂N，N'-二仲丁基对苯二胺过程中是过量的，回收利用可以节省不少成本，但其可以加氢生成仲丁醇，有必要测定回收丁酮中仲丁醇的含量。

The calibration coefficients K were determined by using nine pure compounds in the molecular weight range of 178 to 716 in benzene, chloroform and methyl ethyl ketone at several temperatures in two apparatus of different thermistor assembly.

在热敏电阻装置不同的两种仪器上，对分子量为178—716的九种纯化合物，在苯、氯仿和丁酮中，和几个温度下测定了VPO仪器常数K值，在此分子量范围内，K值是常量。

The products used are Chemlok 205 primer diluted 1:1 with methyl ethyl ketone and Chemlok 233X cover coat diluted 1:3 with toluene.

所用产品为Chemlok 205 底胶用一倍量甲基乙基酮稀释，和Chemlok 233X 盖层用3倍量甲苯稀释。

Buna-N should not be used in highly polar solvents such as acetone and methyl ethyl ketone, nor should it be used in chlorinated hydrocarbons, ozone or nitro hydrocarbons.

Buna-N不能用于高极性溶剂，如丙酮和丁酮，也不能用于氯代烃类，臭氧或硝基烃类。

Lower toxicity or higher toxicity from mixtures than the expected depends on their constituents and potencies. It is very likely that the workers could be exposed to N,N-dimethylformamide, methyl ethyl ketone, and toluene in the occupational environments simultaneously.

在职场环境中极易同时暴露到二甲基甲醯胺、丁酮与甲苯，本研究主要目的是探讨共同暴露丁酮与甲苯不同浓度时，对於DMF暴露生物指标即尿中DMF 与尿中NMF 的影响，及探讨DMF混合暴露下对MEK生物侦测的影响。

Side-stream experiment for the removal of sec-butanol from recycle butylenes by adsorption on adsorbent PUMS-01 was carried out in a methyl ethyl ketone unit.

对甲乙酮装置循环丁烯脱除仲丁醇吸附剂PUMS-01进行了工业放大实验，实验结果表明产品性能达到了小试实验的水平。

Main operating liquid chemicals, refined oil, animal and plant oils, alcoholic products such as storage, transit, filling the allocation of business, sales and marketing under the Department of the Lanzhou Petrochemical Company production of methyl ethyl ketone, acrylic, and other petrochemical products , Lubricating oil, lubricants fat and their equipment, instruments, machinery, building materials, light industry, agricultural and sideline products, such as business sales.

主要经营液体化工品、成品油、动植物油脂、酒精等产品的存储、中转、分拨灌装业务，下设的市场销售部负责兰州石油化工公司生产的甲乙酮、丙烯酸等石化产品，润滑油、滑润脂及其设备、仪表、机械、建材、轻工、农副产品等经营销售业务。

The primary amine of DETA is closed by ethyl methyl ketone to reduce the reactivity of –NCO group and –NH2 group and smooth the reaction process. The mole ratio value of –NH2/-NCO should be 2.2 to make sure that –NCO group is completely closed in by –NH2 group and amine terminate compound is prepared. The reaction temperature, reaction time and the way of adding raw materials to vessel are discussed. Structure and performance of the resin are analyzed with infrared ray spectrum.

用甲乙酮封闭DETA分子中的伯胺基团，降低-NCO与-NH2的反应活性，使反应平稳进行；研究投料比和投料方式对反应的影响；为确保生成以氨基封端的聚氨酯树脂，并将游离的异氰酸酯反应完全，最佳原料投料比控制在-NH2/-NCO=2.2；确定合理的合成条件如反应温度、时间等；利用红外光谱分析端氨基聚氨酯树脂的结构与性能。

Catalyst ; sec-butyl alcohol ; methyl ethyl ketone ; dehydrogenation ; BC-DH2004 catalyst

催化剂；仲丁醇；甲乙酮；脱氢； BC-DH2004催化剂

Administrative control: Carries on the appraisal to the entire factory clean water used, the control uses the water volume The formulation procedure guarantees the clean water used at will not to discharge The factory will have the latent risk after the appraisal the source of pollution to divide into two parts, after because the factory all cleans waste water content will have the harm matter all will be same:Methyl ethyl ketone, peroxidation armor second grade alkone, styrene, MMA, therefore will possess the washes with pool and washes the eye to treat as a source of pollution, and the suggestion will make the improvement with the identical plan.

行政控制：对全厂清洁用水进行评估，控制用水量。制定程序以确保清洁用水不被随意排放。工厂通过评估后将有潜在风险的污染源分为两个部分，因为工厂所有的清洗后的废水内含有的危害物质都是一样的：丁酮、过氧化甲乙酮、苯乙烯、MMA，所以将所有清洗池和洗眼器当作一个污染源，并建议用同一个方案去进行改进。

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。