区时
- 与 区时 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Prussian blue staining revealed more than 98% of BM-MNCs were labeled by Feridex and BM-MNCs appeared to be unaffected by magnetically labeling. Three dogs injected Feridex- BM-MNCs were visualized at one week by MRI, but none of unlabeled BM-MNCs were seen. All lesions that were detected within one week could not be visualized over four week. The dot injected Feridex-cells which fixated by 4 % methanal also was seen at one week by MRI, but the signal disappeared at two week.
普鲁士蓝染色显示体外Feridex标记BM-MNCs成功率达98%以上,而且细胞活性不受影响;其中3只实验犬标记细胞移植区1周内可用1.5T磁共振仪3DSSFP序列在体扫描到T2低信号影像,4周时该低信号消失;同样条件下经甲醛固定的标记细胞在1周时也可检测到T2低信号,但2周时该低信号消失;未标记细胞移植区没有检测到低信号。
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The anode structure of CI-LIGBT is optimized by numerical simulation, and it is pointed out that segmented p〓 anode region surrounded by n〓 anode region is the key to improve the ability of current limiting, and the more deeper the n〓 anode junction relative to the p〓 anode junction, the more powerful the ability of current limiting is. The affection of the breakdown voltage BV〓 of the reverse biased p〓n〓 junction and the sample resistance upon the latching current, the latching voltage and the on-state voltage have been studied, and it is indicated that the tradeoff between the on-state voltage and the latching characteristics is the excellentest when BV〓 is 1. 1V so that its on-state voltage can be just only 0.6V higher than conventional LIGBT. It is also found that this device is especially suit to high temperature environment. Based on X. B. Chen's surface voltage sustaining structure using optimized variational lateral doping and Ludikhuize's multiple floating rings structure, high voltage LIGBT and is studied in this paper.
通过数值模拟,优化了CI-LIGBT的阳极区结构,指出采用被n〓阳极区包围的单元状p〓阳极区是提高该器件限流能力的关键,而n〓阳极区结深相对p〓阳极区结深越大,器件的限流能力越强;分析了反偏p〓n〓结击穿电压BV〓和取样电阻对器件闩锁电压、闩锁电流和导通压降的影响,得出BV〓在1.1V时器件导通压降和抗闩锁能力间的折衷关系最优,其导通压降仅比普通LIGBT高0.6V;分析了温度对LIGBT闩锁性能的影响,表明CI-LIGBT即使在450K的高温下也不会闩锁,尤其适用于高温工作环境。
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To conduct such research a new experimental apparatus was established.With this setup the two-photon excitation spectra of Barium and one-photonexcitation spectra of Strontium Rydberg atoms were recorded and identified.The Stark spectra of Strontium atoms showed the "l-mixing" and "n-mixing"features. By changing laser wavelength and external electric field strengthsimultaneously, the scaled-energy spectra of Strontium 〓 Rydberg atomsat constant scaled-energy ε=-3.00,-2.50 and -1.88 were recorded for thefirst time. The experimental spectra were Fourier transformed and yielded therecurrence spectra.
主要工作包括:建立了一套用于外电场原子光谱研究的原子束实验装置;获得了Ba原子的双光子、Sr原子的单光子零场激发谱,并对各谱线进行了标识;进行了Sr原子电场Stark效应研究,观察到了低场时能级角量子数"l"混合区及高场时主量子数"n"混合区的存在;首次获得了Sr原子在标度能量ε=-3.00、-2.50及-1.88时〓高Rydberg态电场标度能谱及傅立叶变换后的电子回归谱。
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The comparative investigation of the characteristics of deformation and AE were conducted and the results are presented as followed: 1. The characteristics of rock AE are correlated to the strength, joints, cracks, and the size and hardness of crystalline grain. 2. The sequence of AE can be divided into four phases: beginning phase, tempestuousness phase, drop phase and dreariness phase. The loss and the duration of the phases are correlated to the rock character and flaws in the rock. 3. The AE rate characteristics are not almost concordant with the AE energy rate. 4. Besides the homogeneity, the strength of rock contributes the activity of AE. The higher the strength is, the lower the activity is. 5. There is a dreariness phase before the failure of most kinds of rock. 6. Whether the precursor is obvious is correlated to rock the character, and the precursor of AE rate is more apparent than the precursor of AE energy rate comparatively.
通过对比研究这六种不同岩石的变形和声发射特征发现,岩石声发射受到岩石强度、节理裂隙和晶粒软硬大小等的影响;岩石声发射过程存在初始区、剧烈区、下降区和沉寂区,各个阶段是否存在及持续时间与岩石强度、内部缺陷等有关;岩石的声发射事件率特征与能量率特征并不完全一致;岩石的声发射活性除了受其均匀性影响外,还受到岩石的强度影响,强度越小,声发射活性越强;大多数岩石破坏前存在一声发射沉寂区;岩石的破坏前兆是否明显跟岩性有关,相比较而言,岩石破坏时的声发射率前兆比声发射能量率前兆更为明显一些。
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The main characteristics include: the quiet Sun corona has a rapid response to the flare heating, within 2 second the corona temperature increases nearly one order of magnitude, but later such increase becomes very slowly; the downward velocity at early stage of impulsive phase is too small to be negnected; chromospheric evaporation made by conduction shows some intensely, the maximum evaporated velocity may be as large as 1000 km/s; the chromospheric condensation appears just when the chromospheric evaporation takes place and its place always coincide with that of transition region in the early stage; the maximum of chromospheric condensation occurs also in the early stage of impulsive phase, at which the density in condensation may be larger two order of magnitude than that of surround and the downward velocity may be as large as 100 km/s; after the maximum of chromospheric condensation, its strongth decreases gradually but its width becomes greater with time and have a tendency to transport into deep chromosphere; the front of chromospheric condensation heats atmosphere obviously and the temperature in the chromospheric condensation is higher than the original case; the downware velocity of transition region may be greater than 100 km/s at the early stage; when the evaporated material collide at the top of loop, the densityand the presure there increase rapidly, which result in the formation of a shock wave; and so on.
在改善色球辐射损失和精确分辨过渡区的基础上,通过联立求解连续性方程、动量方程和能量方程,构造了一维磁限制性耀斑环在热沉积作用下的大气动力学模型,获得了耀斑热模型下脉冲相早期较为细致的大气演化理论图象,其主要特征是:耀斑对宁静日冕的加热相当迅速,仅2秒钟日冕温度增加即达一个量级,之后日冕温度增加缓慢;脉冲相早期日冕向下速度很小,几乎可以忽略,热传导驱动色球蒸发,其过程较为激烈,蒸发极大速度可达到1000km/s;色球压缩区与色球蒸发几乎同时形成,且在早期其位置总是与过渡区位置重合;色球压缩极大发生在脉冲相早期,其时密度可高于周围约2个量级,向下速度可超过100km/s;色球压缩极大后,其强度逐渐减弱,但宽度明显增大,且渐渐脱离过渡区往色球传播;压缩区内物质温度要高于原先的大气温度;过渡区下降在脉冲相早期相当迅速,可超过100km/s;当蒸发物质在环顶高速相碰时,环顶的密度、压力迅速增大,且温度也有所增加,导致形成激波,其波面以每秒上百公里的速度自环顶向下传播;在脉冲相前期,日冕软x辐射对色球的加热作用可以忽略;等。
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Adopts the all- air and natural ventilation system for the opening north wall;the floating floor and isolation table to isolate machine vibration,the sounds insulation materials between two walls to insulate noises in the plant;the air conditioning system separately for the audience area and sports area,the fan-coil unit and floor heating system only for the sports area to adapt the use after the Olympic Games,the natural ventil...
针对1层两个比赛厅北墙敞开的特点,采用全空气空调系统、排风从敞开空间自然排出方案;针对空调机房距4个比赛厅仅一墙或一板之隔的特点,空调机隔振采用浮筑楼板加减振台板、隔声采用双墙中间夹隔声材料层的方案;针对奥运会后观众区改作他用、运动区继续作集训使用的特点,观众区和运动区各有一套空调系统,运动区另设风机盘管和地板供暖;针对步枪、手枪射击时产生弹药味的特点,采用吊顶设通风格栅、高窗设电动开启的自然通风方案。
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Cleric exercise his ministry in another diocese, but always with the prior agreement of the twodiocesan Bishops, that is, the Ordinary of the particular Church in which he is incardinated andthe Ordinary of the particular Church for whose service he is destined (10.3).and cooperation within the diocesan Catholic community: the diocesan curia, the presbyteralcouncil, the college of consultors, the diocesan pastoral council and the diocesan finance council.These agencies express communion, they favour the sharing of common responsibilities and are
年人仅在员在不有必同正须教当隶区理属团由一体个时内,地出并方现教须的会经问或所题者属,一和我个前认修往为会服有务团本体教份,区并的提两须及在位天主与主教其教教事法先区典协主所议教规署下,、一司「名铎圣每咨职议位人及教员参区才议主能会教在、都另牧应一灵充教委分区员利执会用行、教其财区职务团务委体。
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It was studied with the aid of a one-dimensional time-dependent ionospheric model self-consistently in the continuity,momentum and energy equations.
利用一维自洽的时变极区电离层模型,研究极隙区极光粒子沉降对极区电离层F层电子密度影响的时变过程。
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Refining grain behavior of the heat affected zone of E36 high strength low alloy steel was studied, when E36 steel was welded by three wires submerged arc welding with 110 kJ/cm large heat input .
大热输入焊接时,氧硫复合物诱导热影响区的晶内铁素体形核,并促进晶内铁素体的感生形核,晶内铁素体及其感生晶内铁素体使热影响区粗晶区的晶粒细化,确保焊接热影响区粗晶区的强度与韧性不降低。
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According to the distribution law of three zones in uncovering coal and the relation between the distribution law and delay outburst, the prevention and control technology is brought up, which firstly adopts gas drainage in the coal through drainage hole to release the outburst power by stages, and then intensifies the intensity of uncovering coal and increases the length of stress relaxation zone and stress concentration zone by using the liquid injecting and freezing to prevent the coal rheology. At last, the shoring measures to prevent roof falling is tabled.
根据掘进工作面附近暴露煤体的&三区&分布规律及其与延时突出的关系;提出先采用钻孔抽放石门突出煤层瓦斯等措施分阶段释放煤与瓦斯突出动力源;再用注液冻结技术增强揭开煤体的强度、增加集中应力区和卸压区的长度来防止被揭开煤体发生流变而导致延时突出的防突技术;以及在揭煤后采取迅速支护防止空顶和冒落等防治措施。
- 推荐网络例句
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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.
。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。
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Go down on one's knees;kneel down
屈膝跪下。。。下跪祈祷
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Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.
Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。