查询词典 boiling range

The conversion of the high-boiling components and low-boiling components of silane to valu- able methylchlorosilane by catalytic cracking and disproportionation catalyzed by acid treated active carbon andγ-Al_2O_3 was studied.

用酸处理的活性炭和γ-Al_2O_3组成双段催化剂，通过有机硅高沸物和低沸物的裂解歧化反应制备了甲基氯硅烷，考察了反应温度、质量空速等因素对反应的影响。

Its purpose is threefold: the use of high-temperature rapid passivation of the active enzyme to stop the fermentation; evaporation of water, reduce the volume, fixed shape, to keep dry to prevent mildew degrees; distributed most of the low boiling point of the smell of grass, and intensify and retain high-boiling point aromatic substances, was unique sweet tea.

其目的有三：利用高温迅速钝化酶的活性，停止发酵；蒸发水分，缩小体积，固定外形，保持干度以防霉变；散发大部分低沸点青草气味，激化并保留高沸点芳香物质，获得红茶特有的甜香。

The residue is then cooled and acidified with dilute hydrochloric acid. The toluene layer is separated off, washed with water and distilled. Toluene and other low-boiling fractions first distil over and finally pure diethyl phenylmalonate is obtained boiling at 165-166°C, under 20 mm. pressure and having m.p. 16 °C. The yield is 85% of the theoretical.

剩余物冷却然后用稀盐酸酸化，分理出甲苯层，用水洗涤，然后蒸馏，甲苯和其他低沸点馏分先被蒸馏出来，最后获得20毫米压力下沸点为165-166摄氏度的二乙基苯基丙二酸酯，其熔点为16摄氏度，理论收率为85%。

Low-boiling phenols in low-temperature coal tar are important chemical raw materials. For the identification and determination of the individual phenol boiling below 210℃ in the low temperature coal tar, the methods of gas chromatography, liquid-liquid chromatography followed by ultra-violet analysis and fractional distillation followed by infrared analysis were evaluated and compared.

随着煤炼油工业的发展，煤焦油中的酚类，特别是低級酚，作为化工原料的利用很重要，我們应用(1)气液色譜法，(2)液液色譜与紫外光譜法結合及(3)精餾与紅外光譜法結合三种不同方法对210°以前的低級酚进行了各种异构体的成分分析，比較分析結果：三种方法对同一样品进行分析时，最大絕对誤差在2％以内，其中以气液色譜法最为快速，液液色譜法次之，精餾-紅外光譜法費时間較多；但后二种方法所得数据較完全。

Now on the market can meet the cup pot products mostly with heat preservation, limited by automobile application current security issues, these products to boil water will not solve the technical problems, or by more than 80 degrees Celsius can produce false called the phenomenon of boiling boiling point.

目前市场上能够见到的车用杯壶产品大多以保温为主，受限于汽车应用电流安全问题，这些产品都未能解决达到将水煮沸的技术难点，或者以80多摄氏度即可产生的沸腾现象假称为达到沸点。

Finally, a prophase physical model has been tried to explain transition form silent film boiling to noisy film boiling.

最后，首次建立了一个前期的物理模型，并试图解释了从无噪声沸腾到噪声沸腾的过渡。

The waste acid from benzol refining is carried through preliminary,standing and separating the acid tar,and then it is sent to the boiling bed of the boiling furnace of the sulfuric acid production plant roasting.

精苯废酸经过初步处理、静置分离去除酸焦油后送入硫酸生产装置沸腾炉沸腾层进行焙烧，通过高温裂解、吸收得到硫酸，将废物进行资源化处理利用。

Family foot's treating is the formulation Chinese herbal medicine which chooses to apply an oneself demand, ground powder behind use just the right amount of boiling water blunt 沏 behind add water to adjust to carry on bathing foot, the best method is the steam which uses a medicine while using boiling water 沏 a medicine smoked steam foot bottom for 5-6 minutes, after add water to adjust bath foot, water quantity had better exceed sciatic nerve acupuncture points, fume smoked steam is extend steam the hair thin blood bore of foot department, make the valid composition of medicine pass hair blood vessel to provide a medicine for acupuncture points adequately, again was circulated by veins and arteries viscera, attain thus inside the disease cures outside, up disease under cure, the winter disease summer treats, the outside disease steams to wash it.

家庭足疗是选适用自身需要的配方中药，碎粉后用适量沸水冲沏后加水调温进行浴足，最好的方法是在用沸水沏药时用药的蒸汽熏蒸足底部五至六分钟，后加水调温浴足，水量最好超过坐骨神经穴位，蒸气熏蒸是将蒸汽把足部的毛细血孔扩张，使药的有效成份充分地通过毛血管给穴位供药，再经经络运行到五脏六腑，从而达到内病外治，上病下治，冬病夏疗，外病蒸洗之。

Buy red sister yesterday in boiling network programs are critical due to the waist and not normal to strain, which affects the program recording a lot of friends like to buy red sister, showered on the boiling point DianHan, ask about network from the red sister bought, buy red sister in accept our interview to all, after all is good, thank you for the concern and support of his will, in the future work, more efforts since his return.

买红妹在沸点网络昨天的节目中被爆由于腰部扭伤而不能正常的继续节目的录制，这牵动了许多喜欢买红妹的朋友的心，大家纷纷向沸点网络发来电函，询问关于买红妹的身体情况，买红妹在接受我们采访之后向大家表示，自己现在的情况一切都好，很感谢大家对他的关心和支持，自己也会在日后的工作中更加的努力，以来回报大家对他的支持。

Boiling process under different condition were taken pictures depending on the use of microscopy in order to find how system variables such as surface condition, laser parameters effect the rapid transient explosive boiling under low temperature environment.

利用显微放大摄影系统对不同工况的沸腾过程进行了拍照，发现不同系统变量：如试件表面状况、激光参数对低温工质超急速爆发沸腾行为有着重要的影响。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。