查询词典 liquid

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。

It is found that liquid crystalline compounds with low-melting point, small melting enthalpy and similar structure should be selected in order to obtain stable liquid crystalline mixed systems with broad nematie phase range.

认为为了获得稳定的宽向列相范围的液晶混合体系应选择熔点低、熔融热焓小和结构相类似的液晶化合物。

The company developed and produced the "Bao-chun card," and "Kim Tae-card" campaign vacuum packaging machines, multi-functional-sealing machine, liquid packaging machines, plastic cups canned-sealing machine, plastic cups vacuum packaging machines, automatic sealing Wanmian Machines, packaging machines shrinking, canned paste pneumatic machines, pneumatic cylinders of liquid, the tape automatically sealing machine, down compression packing machine, cotton products compression packaging machines, automatic molding plastic cup canned closure cutting machines, automatic Cuff-cutting machine closures, Binder, hand pressure-sealing machine, foot-sealing machine, and so on dozens of series over 100 varieties, some of the domestic products to fill gaps or meet domestic and international advanced level of similar products, have won several provincial distinctions, Buyou, national scientific and technological progress second prize and the international gold medal.

本公司开发生产的&葆春牌&、&金泰牌&系列真空包装机、多功能封口机、液体包装机、塑杯罐装封口机、塑杯真空包装机、碗面自动封口机、热收缩包装机、膏体气动罐装机、液体气动罐装机、胶带自动封箱机、羽绒压缩包装机、棉制品压缩包装机、塑杯自动成型罐装封切机、全自动袖口式封切机、捆扎机、手压封口机、脚踏封口机等数十个系列100多个品种，部分产品填补了国内空白或达到国内、国际同类产品先进水平，曾多次获得省优、部优、国家科技进步二等奖及国际金奖。

As the study shows, the signal of recoil velocity is selected by the velocity sensor, then the electric current of magnetic liquid buffer is confirmed through the contrast and calculation of the control system, and the movement resistance is adjusted by changing the viscosity of magnetic liquid medium, so the velocity fluctuation of bolt is reduced effectively.

研究结果表明，通过枪管速度传感器，采集发射时的后坐速度信号，经控制系统的对比和解算，确定磁流体缓冲装置的励磁电流，改变磁流体介质的动力粘度，调节自动机运动阻力，可以有效地减小自动机前冲击发速度的波动。

Besides being affected by ferromagnetic basic carrier liquid viscosity and magnetic solid granule in ferromagnetic liquid, ferromagnetic fluid viscosity is primarily concerned with additive magnetic field intensity and temperature.

分析了影响磁流体粘度的因素并导出了其可控参数与磁流体粘度系数间的函数关系；说明磁流体粘度除了受磁流体基载液粘度和磁性固相纳米颗粒的影响外，还与附加外磁场强度和温度有关，其中外磁场强度 H的影响要大于温度 T的影响，并指出了三种可能的控制外磁场强度的方

In the area of high technology of China, the developing technology of cryogenic thermodynamic process and heat transfer has resulted in the Shenzhou-V man-carrying space ship, Fengyun-III meteorological satellite and magnetic suspension train. Manufacturing of fuel (liquid hydrogen and liquid oxygen) of a cryogenic rocket, the cryocooler used to cool down infrared sensors, cryogenic-condensation vacuum pump used in manufacturing of semiconductors, super-conduct quantum interferometer and liquefied natural gas technology are all outcomes of the studies on cryogenic thermodynamic process and heat transfer. In these areas, there are many unexploited sub-areas. Therefore, cryogenic thermodynamic process and heat transfer is a developing study area, and is await more jobs by the younger generation.

在高科技领域，我国空间探索用&神州五号&载人飞船的成功发射、&风云三号&气象卫星的可靠运转以及磁悬浮列车技术等都与低温热力过程与传热技术的研究进展密切相关的，低温火箭发动机液氢液氧燃料的生产、红外传感器冷却的低温制冷机、半导体制造业用的低温冷凝真空泵、超导量子干涉仪与液化天然气的储运等技术都是低温热力过程与传热技术研究发展的产物，且有很多新技术有待于开发，是一个与时俱进、不断开拓的领域，有待于有志者去开发。

The complexing properties of compounds 10a, 10b, 11a and 11b toward alkali metal ions were studied by 〓H NMR titration, ESI-MS, UV-Vis spectra, Fluoresence spectra and liquid-liquid extraction. The results show:(1) the 1:1 complexes were formed.(2) The calix-crown 10a, 11a have a higher selectivity for Na〓 ions, whereas 10b, 11b for K〓 ions.(3) The complexing ability toward alkali metal ions was enhanced when the calix-crown have side arm carbonyl.(3) The coordination of alkali metal ions toward phenoxy, carbonyl and crown ethereal oxygens take place by rotation around the carbon-carbon bond of carbonyl and methylene.

六，用〓H NMR滴定，ESI-MS，UV-Vis，Fluorescence，液-液萃取实验研究了10a，10b，11a和11b对金属离子的配位性质，研究结果表明：1）杯芳烃冠醚衍生物同碱金属离子形成了1：1配合物，化合物10a、11a对Na〓具有较高的配位能力，化合物10b、11b对K〓具有较高的配位能力；2）在杯冠醚环的旁边引入带有羰基氧原子的基团作为侧臂参与配位可以加强对碱金属离子的配位能力；3）金属离子分别同苯酚氧，羰基氧，聚氧醚链氧发生了配位，配位过程中侧链基团涉及到了羰基碳与亚甲基碳的碳碳键的旋转过程。

Shaking culture with the liquid containing 1.5×10^6 connidia per millilitre for 3.5 d at the temperature of (25±1)℃ and 120r/min resulted in max mycelial of 5.1mg/mL and amylase yield of 272.42U/mg. An initial range of pH 4~6 in the liquid culture was the most favorable to amylase production with the yields of 1377.20~1528.99 U/mg. The activity of E.

在孢子浓度为1.5×10^6个／mL的PD培养液中恒温(25±1)℃振荡(120r/min)培养3.5d，菌丝生物量最大达5.1mg/mL，产淀粉酶量达272.42U/mg；培养液初始pH4~6最有利淀粉酶的产生，产酶量为1377.20~1528.99U/mg菌丝。

The drop speed of liquid can be ascertained by the keyboard at the range of 20 drops per minute to 150 drops per minute , and this system makes the real drop speed at the range of 1 10% of the keyboard inputs , and when the liquid reach the warning level the system will raise the alarm .

点滴速度可用键盘来设定，设定范围为20~150，控制误差范围在1 10%滴。液体的实际点滴速度和通过键盘设定的点滴速度可以通过LED显示器显示出来。

A zeroth model of liquid fuel temperature profile is developed. The results are reported in terms of liquid pool mean temperature change with time, and the numerical results agree well with the experimental data.

在实验基础上，建立了液体燃料液相温度变化的零维模型，定量给出了液体燃料平均温度的变化规律，理论计算结果与实验数据吻合较好。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失