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Results revealed that the large side insulation of the stator bar in slot is available for ultrasonic pulse-echo testing; Coupling transducer on the surface of a practical stator bar could minimize the influence on the measurements of velocity, contributing no destructivity of the ultrasonic testing for stator insulation; The simultaneity of same velocity and higher attenuation can be used to detect insulation delamination from conductors; Compared with the wide sides of the bars in slot, the short sides of the bars near the exit from slot and the end bars had a same velocity and a higher attenuation; The velocity might be exactly measured on the shot sides of the bars near the exit from slot and the end bars, while the attenuation might not, which were examined though filed tests; V min decreased greatly and V av decreased slightly with the service time of the bars.

在实验室对线棒多种结构处的主绝缘和不同运行年数(未老化、16、18 和23年)线棒的主绝缘进行了低频超声反射法检测试验,并进行了现场试验,发现(参见 Hao et al, IEEE DEI, to be published),槽部线棒的宽面绝缘不受换位绝缘的影响,比窄面绝缘更适合超声测量;线棒表面平滑的半导体层减小了耦合剂对超声测量的影响,实现了无损性;波速不变而声衰减减小可以检测线棒出现绝缘与导体脱壳缺陷;出槽口和端部线棒的窄面绝缘与槽部线棒的宽面绝缘相比,声衰减大而波速一致;现场试验验证了波速不受绝缘结构和现场测试条件的影响,而声衰减受以上因素影响很大(参见 Hao et al,中国电机工程学报, Vol.23 No.4); V min 随运行年数明显减小, V av 随运行年数慢慢越小。

If you do, Tips for Home Decoration will be able to give you some guidelines, so that you can refurnish your home in the most handy and economical way.

如果不知道从何入手,那《宜室宜居有办法》就可以给你指引,让你轻轻松松,以最经济的方式,将房子由小变大、由窄变阔。

At the super-low permeable reservior sandstone of Fu and Yang in Daqing Oilfield, many pore throats exist a lot in the types of compacted and restored flakes and curved lamellas while the pore volume of micropore and the thin, compacted and shrunken throat that contribute little to flow take large scale in the total pore space. Thereof high filtrational resistance is caused by much trouble including high content of reservoir shale, serious sensibility to pressure at waterflooding, remarkable effects of undersaturation and water blocks in micropore. A method with laboratory experiment, theoretical confirmation and field application included was adopted to analyze the non-linear flow characteristics, to reveal the deep mechanism of pinhole enveloping macropore and to provide a new technology of improving the development effect. The outcomes aquired are as follows: Multiple cores with different low and super-low permeability were selected to perform seepage experiments by gas, water and oil. Three fields of flow were observed in the reservoir at different low and super-low core permeability. They are pseudo- elastic flow, transition flow and plastic creep flow. So the concept that there was no correlation of rocky absolute permeability with fluid properties that pasted itself was broken up. Two-phase seepage of water displacing oil in uniform super-low permeability shows that the two-phase seepage zone is narrow.

针对大庆油田扶、杨特低渗透油层砂岩孔隙喉道的大小和形态以压实再生型片状、弯片状喉道分布较广,压实、缩小型细喉道型,微孔不可流动的孔隙体积所占总孔隙体积的比例较大的特点;及储层泥质含量高,注水开发中压力敏感性强、微孔隙欠饱和及水锁效应显著,导致流体渗流阻力增大的问题,本文采用室内实验、理论推证和矿场应用相结合的方法,研究、分析了流体非线性渗流特征,更深刻地揭示出小孔包围大孔的机理及产生原因,并提供了改善开发效果的新的技术方法,取得如下成果:选择不同渗透率的低渗透、特低渗透岩心,进行了气、水和油单相渗流实验,揭示出当岩心渗透率不同时,油层内的流体呈现出拟弹性流变、过渡流变、塑性蠕变三种流变区,从而打破了岩心的绝对渗透率与通过岩心流体性质无关的观点;同类特低渗透岩心的水驱油两相渗流实验表明,两相渗流区较窄。

Using this method, wide dimming range can be achieved with narrow frequency range and constant DC link voltage. And the lamp current keeps perfect sine wave all the time, which means low lamp current crest factor is obtained. Its validity is verified by simulation and experiment.

本章最后提出了一种基于T型滤波器的新型的调光方法,采用此方法可以在保持逆变器直流母线电压和开关占空比不变的情况下,只需很窄的频率范围就能达到非常宽的调光范围,而且在整个调光范围内灯电流都基本上是完美的正弦波,这就意味着可以始终保持很低的灯电流波峰因数,仿真和实验结果充分验证了它的优点。

In comparison with bugle shaped nozzle, bifurcated nozzle downward jet angle 45°, cow-nose nozzle and three-hole nozzle, in all, the last two are better than the former and bifurcated nozzle downward jet angle 45 is better than bugle shaped nozzle; Cow-nose nozzle is helpful for guaranteeing the product's quality, in order to protect jet flow from eroding the strand at narrow face, gain uniform temperature distribution at cross section and decrease heat flux, adding the block's width to 100 mm. Three-hole nozzle is advantageous to increase flux and casting speed, but should avoid weak shell thickness in the center broad. In the real production, setting the SEN's immersed depth or plugging the hole at the bottom can adjust the flow and temperature distribution in the mold.

对比喇叭形水口,双侧孔水口(45°),牛鼻子水口和三孔水口,总的说来后两者优于前两者;而双侧孔水口(45°)又优于喇叭形水口;牛鼻子水口和三孔水口比较各有特点,前者对保证铸坯质量有利,为防止流股对窄面的冲击,增加挡块宽度到100 mm,可使结晶器横截面上温度分布更加均匀,降低窄面热负荷;后者对增加流量,提高拉速非常有利,但要防止中孔射流过强导致铸坯中心坯壳变薄,在实际生产中可通过控制水口浸入深度或塞住浸入式水口的底孔来调节结晶器中的流动与温度分布状态。

In comparison with bugle shaped nozzle, bifurcated nozzle downward jet angle 45°, cow-nose nozzle and three-hole nozzle, in all, the last two are better than the former and bifurcated nozzle downward jet angle 45 is better than bugle shaped nozzle; Cow-nose nozzle is helpful for guaranteeing the product"s quality, in order to protect jet flow from eroding the strand at narrow face, gain uniform temperature distribution at cross section and decrease heat flux, adding the block"s width to 100 mm. Three-hole nozzle is advantageous to increase flux and casting speed, but should avoid weak shell thickness in the center broad. In the real production, setting the SENs immersed depth or plugging the hole at the bottom can adjust the flow and temperature distribution in the mold.

对比喇叭形水口,双侧孔水口(45°),牛鼻子水口和三孔水口,总的说来后两者优于前两者;而双侧孔水口(45°)又优于喇叭形水口;牛鼻子水口和三孔水口比较各有特点,前者对保证铸坯质量有利,为防止流股对窄面的冲击,增加挡块宽度到100 mm,可使结晶器横截面上温度分布更加均匀,降低窄面热负荷;后者对增加流量,提高拉速非常有利,但要防止中孔射流过强导致铸坯中心坯壳变薄,在实际生产中可通过控制水口浸入深度或塞住浸入式水口的底孔来调节结晶器中的流动与温度分布状态。

On the basis of analyzing the thermodynamic properties and cycle performance of pure refrigerants, the paper optimizes their concentration while screening NARMs used in wide variable-temperature heat source. The practical applications of NARMs, such as R22/R123, R123/R125 etc., are studied in geothermal heat pump, seawater heat pump, air dehumidification system and dual-evaporator domestic refrigerator. The results show that the NARMs can match the limitation of a pinch point at the air-side exit of heat exchanger, reduce the unreasonable heat transfer temperature difference, and improve the COP of system. The above conclusion is proved by measuring the cycle performance of R12, MP39 and R11/R22 in a two-evaporator experimental system.

其次,本文在工质热物性和变工况循环性能分析基础上,筛选和优化了适应外部大变温热源约束条件的非共沸混合工质及其浓度配比;讨论了相变温差较大的非共沸混合工质(如R22/R123、R123/R125等)在地热源供热热泵、海水源供热热泵、双门冰箱和热泵空气除湿的应用,计算分析表明制冷与热泵系统采用相变温差较大的非共沸混合工质有利于弱化传热过程的&窄点&的约束,减小传热过程中的不合理温差,提高系统COP值;通过建立双蒸发温度循环系统试验装置,对R12、R22/R11和R22/R152a/R124循环性能进行实验研究,结果与理论分析一致。

Chest broad, deep and muscular, never narrow or slab-sided.

前肋骨的弧度在较低的那一端变窄,使肩膀和上臂能够平滑的衔接,并紧挨着胸壁。

Had passed through Canada FDA-medicine and food inspection the Authority, is home, God must travel paste; miracle¤dream saint goods is to increase the vaginal reduction, and anti-inflammatory gynecological sterilization medicine (with its unique effect is: one, to help the natural contraction of the vagina narrower, restore muscle elasticity. 2, clean the vagina, bactericidal detoxification. 3, the treatment of leukorrhea and vaginitis).

已通过加拿大FDA—医药及食品管理局检验,是居家、旅游必备之神膏);奇迹の梦圣品是增加阴道缩力、消炎杀菌的妇科良药(它的独特疗效是:1、帮助阴道自然收缩变窄,恢复肌肉弹性。2、清洁阴道,杀菌排毒。3、治疗白带及阴道炎)。

The reason is discovered theoretically and experimentally, and the maximum transmission distance is formulated according to relationship between the time shift of sidebands and the transmission distance.

对这一现象原因进行理论分析后,得到了脉冲变窄与信号传输距离,光纤色散和光载毫米波信号频率之间的关系,并给出了OCS光载毫米波信号最大传输距离公式。

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推荐网络例句

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。