查询词典 efficiency

The model is used to calculate theoretical EERs of units with different design options. Afterwards a study is performed to determine the payback periods and life cycle costs corresponding to theoretically calculated EERs, which finds out technical feasibility is prior to other factors when establishing EESs for CACUs. Finally, new energy efficiency standards and energy efficiency grades for CACUs are presented based on the aforementioned researches.

利用该模型计算了机组不同设计方案理论上可达的能效比；然后通过分析获得相应能效比所需的回收期以及不同情形下的生命周期成本，发现制定空调机组能效标准应着重考虑技术可行性；最后在上述研究的基础上提出了空调机组新的能效限定值及能效等级。

The maximum theoretical efficiency is equivalent to the Carnot cycle, however the efficiency of real engines is only a fraction of this value, even in highly optimized engines.

最高理论效率相当于卡诺循环，但效率的真正的发动机是只有一小部分的价值，即使是在高度优化的引擎。

Starting from the graphs of P-V and T-S and the second law of thermodynamics, and on different aspects and with different methods, this article studies the maximum value of the efficiency of heat engine in the process of arbitrary cycles, and presents the conclusion that the efficiency of the heat engine in Carnot cycle is the greatest among all arbitrary cycles.

卡诺定理给出了热机的循环效率极大值问题。由P-V图、T-S图、热力学第二定律出发，从不同的角度，采用不同的方法，对任意循环过程的热机效率极大值问题进行了研究，证明了任意循环过程热机效率以卡诺循环的热机效率为最大极限值的结论

Radiation from a fiber coupled diode (core diameter 0.4 mm, N.A. 0.3) is coupled into Tm5% at.,Ho(0.5% at.∶GdVO4 crystal by a pair of achromatic lens for end pumping. Output power of 3.6 W at 2.048 μm is obtained under pump power of 14 W and emission wavelength of 794 nm. The optical-optical conversion efficiency is 25.7% and slope efficiency is 26.6%.

在液氮制冷晶体条件下，利用光纤耦合激光二极管及消色差光学耦合系统端面泵浦双掺5％Tm，0.5％Ho∶GdVO4晶体，在泵浦功率14 W、泵浦波长794 nm时，实现了2.048 μm激光输出，连续运转输出功率3.6 W，相应的光光转换效率为25.7％，斜率效率26.6%。

On output power and efficiency,also considering the Thomson effect,numerical calculating model of output power and efficiency of micro-thermoelectric generator was built up.

微小型热电发电器由于尺寸较小，接触内阻以及结构的覆盖层、导流层等对输出功率和热电转换效率都有不可忽视的影响。

3In four water conditions, three turfgrass water use efficiency with the increase of soil moisture gradient became smaller. Kentucky bluegrass, the highest water use efficiency.

3在4种水分条件下，三种草坪草的水分利用率随着水分梯度的增加逐渐变小，草地早熟禾的水分利用率最高。

The brushless permanent magnet automobile a. c. generator has the advantages of high reliability, long service life, high efficiency, good performance at both low and high speed, low radio interference, simplifying its associated voltage regulator, cutting down materials, technology simplified, as well as high power/weight ratio, etc.,and will be a new product with broad prospects and large market.

无刷永磁汽车交流发电机由于取消了碳刷、滑环及励磁绕组，可大大提高可靠性，延长使用寿命，具有效率高，低、高速性能好、无线电干扰小，与之匹配的电压调节器结构简单、节约原材料、工艺性能好、比功大等优点。

If you have a dry cleaners for more than a scientific setting, then electricity, fuel savings goes without saying, cleaning time, improve efficiency can be reflected immediately.

如果你有一个科学的设置，然后电费一干洗店，燃料节约不言而喻，清洗时间，提高效率，可以立即反映。

It's a matter of efficiency.

这是一个效率的问题。

It provides a scientific and effective method to enhance management level and efficiency of construction site.

为提高建筑工地的管理水平和工作效率，提供了科学、有效的管理方法和手段。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。