提出用极限比速法,并采用厂家公式校核的方法选取冲击式机组。
An ultimate specific speed method checked by formula of manufacturer is proposed.
简要介绍低比速离心泵特点,阐述计算的控制方程和叶轮通道网格划分方法。
The characteristics of low specific speed centrifugal pump are introduced, and the grid generation method for impeller passageway and the governing equations of calculation are also expatiated.
基于低比速离心泵is 50 - 32 - 160模型,对有、无分流叶片的设计方案全流场进行了数值模拟和对比分析。
Based on the low-specific speed centrifugal pump model of IS 50-32-160, two impellers are designed with and without splitter blades.
但是在那时这个数字令人失望,因为这一涨速与前几十年相比已急剧下滑。
At the time it was a disappointment because it was a sharp deceleration from prior decades.
当它在比以前更长的时间里保持不结冰的状态,它也会将更多的热量输入北极区的大气层,这就使北极区的气压变高,使冰岛低压和亚速尔高压之间的梯度变小。
As it remained clear for longer than usual it also bled more heat into the Arctic atmosphere. This caused higher air pressures, reducing the gradient between the Iceland low and the Azores high.
上一次穿越时,我甚至没有合适的速干袜,而且我的营养也没有跟上……我吃了很多的“小黛比”(垃圾食品?)
The first time I did the AT, I didn’t even have proper moisture-wicking socks. And I had horrible nutrition… I ate A LOT of Little Debbies.
门槛跑一般是以比5千米或10千米配速稍慢一些速度跑,但是比半程马拉松的速度要快。
Tempo runs should be done slower than 5k or 10k pace, but faster than half marathon pace.
目前,他们认为石墨烯作为光通讯基础的话,速度可以比目前所能达到的最大传速快10倍乃至100倍。
They now believe that graphene could be the foundation for optical communications that are at least 10 and maybe even 100 times faster than the fastest data transfer rates available today.
虽然起始基数比私立的低,但是公立法学院的学费涨速更快:对于那些想留在本州上学的人,学费平均值是16000美元左右,几乎涨了三倍。
At public law schools fees grew even faster, albeit from a lower base: for those going to schools in their home state they almost trebled, taking the median to around $16, 000.
速调面粉的粒子不仅比普通面粉的大,而且它们的大小较一致。
Particles of instantized flours are not only larger than ordinary flour, but they are more uniform in size.
根据所提理论和胶凝时间曲线的特性数值,计算了所形成的硅酸的各级酸离解常数和聚合作用的比凝速常数的近似值。
On the basis of the theory and the characteristics of the gelation time curves, specific polymerization rate constants as well as successive acid dissociation constants are calculated.
结果表明,怠速pid控制方法应用于车用汽油机怠速控制是可行的,而且比开环控制更加有效,并在目前电控汽油机上得到了实际验证。
The result indicates PID control method is available to the gasoline engine idle, which is more effective than open loop control, and gets practice verification in electrical control gasoline engine.
另一些人认为,节奏配速,正是比乳酸阈配速每公里慢个15到20秒。
Others think that tempo pace is just slower than your LT - about 15 to 20 seconds slower.
通过在层流炉上进行的多种生物质闪速热解挥发实验,并利用灰分示踪法计算得到了挥发百分比实验数据。
Based on experiments of various biomass flash pyrolysis volatilization performed with a laminar entrained flow reactor, the model was checked by experimental data acquired with ash tracer method.
结果表明,随着积分级数的增加,像移对相机成像质量的影响越来越大,尤其表现为偏流角及速高比的变化。
The effects of the image motion caused by them on the image quality for different integral numbers are calculated and simulated for a given orbit and camera.
由于较低的充气效率,发动机使用LPG燃料成功起动时的初始节气门开度及能够稳定在怠速转速下的节气门开度比使用汽油燃料的大。
Because of the lower volumetric efficiency, the initial throttle openings for the start and idling of the LPG engine are larger than those of the gasoline engine.
研究了不同拉速、过热度及二冷比水量对铸坯表面中心和角部温度及铸坯凝固终点位置的影响。
The effects of different casting speeds, degree of superheat and secondary cooling to the central and Angle part temperatures and the final solidification point have been studied.
不同滤层厚度、滤速和加药比ALT等条件下的过滤试验结果表明:滤层中单元滤床的特征尺寸的变化仅与空隙率有关。
The experiment reveals that the variation of UFE numbers is only dependent on the volume-specific deposit of filter, the effects of filtration velocity, bed depth and ALT ratio are not evident.
结论速避凝配伍阿司匹林比单独应用阿司匹林治疗急性缺血性脑卒中疗效更好。
Conclusion Fraxiparine associated with Aspirin treating acute cerebral ischemic stroke has better effect than use Aspirin only.
为高燃速推进剂比冲测试提供了可靠的试验依据。
It is a reliable measuring method of the specific impulse for the high-burning rate propellants.
导出奥利康和克林根贝尔格锥齿轮铣齿机差速挂轮比和分齿挂轮比计算通式;
In this paper calculation formulas of differential change gear raito and index change gear raito for Oerlikon and Klingelnerg bevel gear generating machines are derived.
结果表明:复合稳定剂比单一稳定剂镀速高、稳定性好、孔隙率低。
Experimental results indicate that compare to single stabilizing agent, compound stabilizing agent has higher plating rate, better stability and lower porosity.
结果表明:荔枝微波干燥主要处于恒速阶段,干燥速度取决于不同的间歇比;
The experimental results showed that the constant speed drying was the main stage of litchi microwave drying and the drying speed depended on different intermittent rates.
本文研究了卫星摄影系统象移补偿速高比计算。
A calculating method of velocity-height ratio for image-moving compensation of a satellite photograph system is presented.
同时对稀薄燃烧、增压中冷发动机做了ECUI/O标定、怠速标定、冷启动标定、对电控系统进行全工况内点火提前角的标定、内空燃比的标定、发动机增压压力标定。
Then basic calibration such as ECU I/O calibration, idle speed calibration, cold start calibration, ignition advance calibration, air fuel ratio calibration, boost pressure calibration are conducted.
数字仿真表明,在风速低于额定风速时变速运行捕获能量比恒速运行捕获能量大;节距调节控制可以很好地使输出功率稳定在额定功率左右。
The simulation results indicate that wind turbine is operated at maximum power coefficient with variable-speed mode and the output power of generator is kept around rated power with pitch control.
使用振幅比法计算地震的震源机制解软件,要求条件低、计算简便易行,可满足地震台网在地震速报中同时提供震源机制解参数的需要。
The software using method of amplitude ratio can compute source mechanism easily in less limitations. It can give both earthquake location parameter and source mechanism solution.
通过考察补加方式发现:恒速连续补加方式比批次补加的效果好,镜检发现发酵过程中批次补加容易导致菌体形态异常。
As far as the feeding mode was concerned, constant-speed feed was more effective than batch-wise feed. The abnormal cellular form was often observed when glucose was batch-wise fed.
通过考察补加方式发现:恒速连续补加方式比批次补加的效果好,镜检发现发酵过程中批次补加容易导致菌体形态异常。
As far as the feeding mode was concerned, constant-speed feed was more effective than batch-wise feed. The abnormal cellular form was often observed when glucose was batch-wise fed.
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