液氮

词组短语

liquid nitrogen

与液氮相关的网络例句 [注：此内容来源于网络，仅供参考]

The theoretical analysis of the work cycle is made for the pressed air engine and liquid nitrogen engine.

从理论分析的角度，对压缩空气发动机和液氮发动机的工作循环进行了分析讨论，采用不同概念计算了两者的可用能，并着重分析了膨胀初始压力和温度对输出功的影响，还探讨了液氮发动机工作循环的优化途径。

The influences of heat exchanger and engine on system efficiency are distinguished. The thesis also analysis the efficiency of the compound cycle of liquid nitrogen engine operating on open Rankin cycle together with the liquid nitrogen refrigeration cycle and economy in detail.

首次采用变质量系统热力学原理探讨了通过对进气温度与缸内残余质量温度的控制有助于实现准等温膨胀的可行性；首次采用有限时间热力学对具有压降不可逆液氮发动机开式朗肯循环进行了工作过程分析，研究了漏气和压降对液氮发动机效率和功率的影响关系。

In the clip above we see an attempt to "cool" the thermite reaction by dumping it in a vat of liquid nitrogen.

液氮的温度大约为-196℃，偶实验室要用的，灌液氮的场面也很壮观，有时间发图给大家看下！

The healing process and histological behavior of the tendon transplantation group were similar with those of the autografting group, however, which was better by liquid nitrogen after program freezing than by -80℃ deepfreezing.

结论经程序冷冻液氮保存和-80℃深低温保存方法冻存的兔异体髌腱重建膝关节交叉韧带后愈合过程和自体韧带移植重建过程相似，但程序冷冻液氮保存法优于传统的-80℃深低温保存法。

A set of in situ infrared apparatus which can beoperated at liquid nitrogen temperature is established. The structuralstudies of polyhydride of Ruthenium is carried out from roomtemperature to liquid nitrogen temperature. The structural conversion of〓 between dihydrogen and dihydride is observed firstly. It issuggested that with temperature changing, a fluxional structureconversion between terminal and bridged hydrogen appears. NMR studyand DV-Xα calculation are performed in this paper.

建立了可至液氮温度的原位红外测试装置，进行了室温至液氮温度区间钌多氢化合物的结构研究，首次发现了〓在室温存在分子氢与原子氢的结构流变，发现了新化合物存在随温度变化而出现桥氢与端氢的结构转化；进行了NMR测试及DV—〓计算。

Cryogenic two-phase flow and boiling heat transfer characteristics are studied by means of visualized experiment in lunate narrow channel.

采用可视化实验方法研究液氮在弦月形狭缝通道内两相流流动和传热现象。利用精心设计和制作的试件，借助高速摄影仪和3CCD 数码摄像机，获得了液氮在弦月形狭缝通道热虹吸沸腾时的气泡行为及两相流动的真实信息。

The genomic DNA of Nosema bombycis was isolated from it's spores, using two methods, ie, Alkaline-Germination and Liquid-nitrogen.

分别用碱发芽法及液氮法抽提了家蚕微孢子虫基因组DNA，其中碱发芽法抽提的DNA质量及数量上好于液氮法抽提的DNA。

Three weeks afer the allografting,there was no significant difference between the two al lografting groups in maximum load(P＞0.05),Eight weeks later,the maximum load of the group that was preserved by liquid nitrogen after program freezing(76.60±4.67)N was better than the group that was preserved by －80℃ deepfrozen(75.99±4.20) and similar with the autografting group(76.72±2.55).4.The healing process and histological behavior of the two deepfrozen groups are similar with the autografting group,and the program freezing group is better.

结果 a经程序冷冻液氮保存方法处理后，髌腱的最大载荷无明显下降，细胞活性得到了较好的保存，组织学观察冷冻损伤较－80℃深低温保存方法轻微；b程序冷冻液氮保存处理的移植物在术后未表现明显的排斥反应，且免疫反应随时间的推移而下降；c移植后3周，各组移植物的最大载荷无显著差异(P＞0.05)，移植后8周，程序冷冻液氮保存组移植物的最大载荷(55.87±1.86)N优于－80℃深低温保存组(52.14±2.79)，而和自体移植组相近(57.70±2.76)N；d从组织学观察看，－80℃深低温保存组和程序冷冻液氮保存组移植后的愈合过程均和自体移植组相似，而程序冷冻液氮保存组的愈合过程和组织学行为更接近于自体移植组。

Results 1.After treated by:program freezing,the maximum load of the allografts has no evident decrease and the cell activity of allografts was preserved well,the frozen hurt after program freezing was more slight than －80℃ deepfrozen,2.No evident reject reaction can be seen during the healing process after deep frozen and the reject reaction declined as the time pass by.3.Three weeks afer the allografting,there was no significant difference between the two al lografting groups in maximum load(P＞0.05),Eight weeks later,the maximum load of the group that was preserved by liquid nitrogen after program freezing(76.60±4.67)N was better than the group that was preserved by －80℃ deepfrozen(75.99±4.20) and similar with the autografting group(76.72±2.55).4.The healing process and histological behavior of the two deepfrozen groups are similar with the autografting group,and the program freezing group is better.

结果 a经程序冷冻液氮保存方法处理后，髌腱的最大载荷无明显下降，细胞活性得到了较好的保存，组织学观察冷冻损伤较－80℃深低温保存方法轻微；b程序冷冻液氮保存处理的移植物在术后未表现明显的排斥反应，且免疫反应随时间的推移而下降；c移植后3周，各组移植物的最大载荷无显著差异(P＞0.05)，移植后8周，程序冷冻液氮保存组移植物的最大载荷(55.87±1.86)N优于－80℃深低温保存组(52.14±2.79)，而和自体移植组相近(57.70±2.76)N；d从组织学观察看，－80℃深低温保存组和程序冷冻液氮保存组移植后的愈合过程均和自体移植组相似，而程序冷冻液氮保存组的愈合过程和组织学行为更接近于自体移植组。

During the fracturing for low pressure and low permeability gas reservoirs, there are some main problems in conventional hydroxypropylguar - organic boron cross-linking system: Firstly, the water-lock damage to low pressure and low permeability gas formations by filter liquor; Secondly, the reason for alkali-sensitive damage in alkali-sensitive reservoirs is that conventional hydroxypropylguar - organic boron cross-linking fracturing fluids were cross-linked under alkaline environment, while the permeability of reservoirs is reduced greatly; Thirdly, the formation pressure is low, and the energy of flow back is not enough, at present, the main measure in oil fields is "injecting with liquid nitrogen", but this technique increased the cost of fracturing, making great troubles in operating, and leaving the liquid nitrogen also is a big problem.

在低压低渗透气藏的压裂改造过程中，常规羟丙基胍胶-有机硼交联压裂液体系存在的主要问题，一是压裂液滤液对低压低渗透气层造成的水锁损害；二是常规羟丙基胍胶-有机硼压裂液是在碱性条件下交联的，对碱敏性储层造成碱敏损害，降低储层渗流能力；三是地层压力低，压裂液返排能量不足，当前各油田采取的措施主要是&液氮伴注&技术，但是&液氮伴注&技术增加了压裂的费用，而且液氮存放也存在较大问题。

与液氮相关的网络解释 [注：此内容来源于网络，仅供参考]

centrifugation：离心

大约2-3万转/分破碎1分钟,菌体颗粒应该成粉末状. 倒出粉末,37度水浴融化后,再用注射器加入液氮中,重复上述步骤,重复3次. 高速(20000rpm,4度30分)离心(centrifugation)收上清,如上清杂质较多,需要多离几遍,上清中目标蛋白(protein)纯化同E.coli.

Dewar bottle：杜瓦瓶,真空瓶(储液氮用)

devise 设计,发明,创造 | Dewar bottle 杜瓦瓶,真空瓶(储液氮用) | Dewar vacuum flask 杜瓦期瓶,真空瓶

Dewar bottle：杜瓦瓶,真空瓶(储液氮用)无忧雅思网

devise 设计,发明,创造无忧雅思网*N?'}q~#q:O%Tc A | Dewar bottle 杜瓦瓶,真空瓶(储液氮用)无忧雅思网/Z&'"ms4{P h[N)bp | Dewar vacuum flask 杜瓦期瓶,真空瓶无忧雅思网k%E TB2G'RL

ln：液氮

方差分析结果均显示差异显著.长鞭红景天悬浮培养细胞过程中最佳培养条件是:在含5%二甲基亚砜(DMSO)的MS培养基上预培养1 h,室温下80%PVS2预处理40 min,然后用100%PVS2于0℃处理50 min,投入液氮(LN)保存1 h后在40℃水浴中迅速化冻,

liquid nitrogen：液氮

先去TOTO那,在他桌上的柜子里拿到一瓶液氮(liquid nitrogen),然后去码头同Velasquez谈话,当听说你捞起了他当年丢失那艘船时他就会离开你. 拿起他座位旁的瓶子,去Blue Casket的厨房用瓶子装些桌上大桶里的酒. 回到Glottis和Meche那,

nitrous：液氮

suspension悬挂系统 | NITROUS液氮 | EXHAUST排气装置

tissue culture：组织培养

液氮罐-细胞培养与组织培养的区别液氮罐 细胞培养与组织培养的区别 组织培养(Tissue culture)是在体外模拟体内生理环境,在无菌、适当温度和一定营养条件下.

LIQUIFIED NITROGEN：液氮 副产品

HYDROGEN SULFIDE 硫化氢 副产品 | LIQUIFIED NITROGEN 液氮 副产品 | NC GAS HYDRO. BOTTOM OIL 氢化塔底油 副产品

LIQUIFIED NITROGEN：液氮

輕真空製氣油 LIGHT VACUUM GAS OIL | 液氮 LIQUIFIED NITROGEN | 液化天然氣 LIQUIL NATURAL GAS

cryotherapy：冷冻疗法

5.冷冻疗法(Cryotherapy)采用二氧化碳雪、液体氮或半导体冷冻机,目前最常用的是液氮,液氮沸点为-195.8℃. 机体的组织在深低温和解冻的条件下细胞内和细胞外形成冰晶,破坏细胞膜,形成水疱或坏死痂,