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As substitute for fluorite lens, a double-layer DOE is used in a long focal-length apochromatic objective lens. The modulation transfer function of this hybrid optical system is suggested for evaluating diffraction efficiency of the multilayer DOE. The results show the diffraction efficiency has a wide and symmetrical distribution in the whole waveband.

利用双层衍射光学元件替代萤石透镜校正混合光学系统的二级光谱,设计并制作了一套长焦距物镜,并利用系统调制传递函数评价了多层衍射光学元件衍射效率,测试结果表明衍射效率在整个设计波段内以较高的数值平均分布。

Moreover, the pre-treatment and post-treatment processes for the steel sheet subject to continuous zinc plating were also discussed. Results showed that the alkaline zincate plating process had many advantages over conventional alkaline cyanide zinc plating process, including high current efficiency, good throwing power, and strung adhesion strength of the coating.

结果表明,该工艺电流效率高(锌离子含量16~24g/L时,电流效率可提高约20%,镀液均镀能力好(宽度为1m的镀锌薄板,中心点厚度与边缘厚度差不大于10%,镀层结合力优良(将试片180°任意弯曲,镀层无起皮、剥落现象;在烘箱中加热至180-200℃,保温60min,冷水中急剧冷却,镀层无突起、鼓泡、剥落现象),所镀得的镀锌薄钢板适合于钝化和彩涂等后处理。

These studies revealed large individual differences between high and low performers, often by an order of magnitude.

3.1 这些研究表明,效率高和效率低的实施者之间具体差别非常大,经常达到了数量级的水平。

This product works on the principle that the inertial vibrating riddler almost reaches resonance. It had a high rate of screening and big swing of the screening machine that it does not jam the screen sieve. It is also of great adaptability to materials. The main vibrating spring uses cutting rubber spring which has low noise, and a long life. It is sealed to prevent environmental pollution. The working efficiency is 3 times than that of the original frequency. It has a good anti-vibrating effect.

该机采用惯性共振系统在近共振状态下工作,单位面积筛分效率高,筛机振幅大不堵筛,对物料适应性强,主振动弹簧选用剪切橡胶弹簧,设备噪音低,寿命长,机壳密闭性好,环境污染小,工作效率为阁振系统固有频率的三倍,有良好的隔振效果。

After analyzing the reason of high energy consumption in desulfurization system, which belongs to Datang Huayin Zhuzhou power generation company, we have raised the following transformations: First, in order to improve the density of serous fluid and efficiency of pulping, install the frequency-converter to the recycle pump of ball mill; The second, in order to monitor the parameters real time and long time, change the installation location of densitometer and PH meter in the absorption tower; The third, in order to decrease the station service power consumption rate, change the booster fan according to model; Last,through optimizing the mode of operation desulfurization serous fluid recycle pump, and make good use of PH meter in absorption tower, we have got achievement that increasing desulfurization efficiency and decreasing the desulfurization consumption rate.

针对大唐华银株洲火力发电公司脱硫系统运行能耗高的现状进行分析研究,提出对球磨机循环泵变频改造,提高制浆密度,提高制浆效率;对吸收塔密度计和PH计移位改造,便于对参数长期实时稳定监视;对进行换型改造,降低厂用电率;通过优化脱硫浆液循环泵运行方式,脱硫塔运行PH值等手段,达到提高脱硫效率,降低脱硫厂用电率的效果。

Moreover, high TONs (turnover numbers, TONs up to 1 000 000 for the reaction of iodobenzene with phenylboronic acid) for the palladium-catalyzed Suzuki-Miyaura cross-couplings were observed

同时,这种催化体系还可以达到很高的催化效率(碘苯和苯硼酸的催化效率甚至可以达到1000000)。

In this dissertation, through studying montanic grid DEM data in view of informatics, it is discovered that montanic grid DEM data possesses features of high information efficiency and low redundancy, which makes it impossible to gain high compression ratio with lossless compression methods.

用信息论观点对山区格网DEM数据进行了研究,发现山区格网DEM数据具有信息效率高、冗余度低的特点,揭示了用无损压缩对其进行压缩时效率较低的原因。

SLon vertical ring pulsating high gradient magnetic separator s,which has the advantages of large concentration ratio, high separation efficiency, strong adaptability, uneasy-to-be blocked magnetic medium and high availability, has found large-scale application in domestic mines in recent years.

SLon立环脉动高梯度磁选机具有富集比大、选矿效率高、适应性强、磁介质不易堵塞、设备作业率高的优点,近几年在国内的矿山已经大规模应用。

Results: NIH3T3 cells were effectively transfected by adenovirus containing VEGF gene in vitro, the transfection efficiency was in a dose-effect manner with multiplicities of infection of the adenovirus.

结果:携带hVEGF基因的重组腺病毒对于NIH3T3细胞具有较高的转染效率,转染效率与病毒感染复制数(multiplicities of infection, MOI)具有量效关系。

The existing stone cutting tool, the tool bit is constituted by the sole grade's grinding material, when cutting the rough stone, the cutting speed is quick, the cutting efficiency is high, but the cutting surface fluctuates in a big way, becomes rough, after the cutting, grind and polishing take long time to do, if use the fine grinding compound, the cutting face is smooth, but the cutting speed is slow, the cutting efficiency is low, therefore the existing stone material cutting tool cannot have the high efficiency to cut the stone which have the smooth cutting surface, in view of this, how to keep the high working efficiency and get smooth cutting surface?

现有石材切具刀头由单一粒级的磨料构成,使用粗料时,切割速度快,切割效率高,但切割面起伏大,变得粗糙,切割后研磨抛光耗费时间长,使用细磨料,切割面较平整,但切割速度慢,切割效率低,因此现有石材切具不能高效率地切割出平整的石材,针对这一现状,如何既能高效率切割,又能使切割面保持平整呢?

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在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。