布里斯托小组成员StephenHallett说,这能提高叶片的效率,延长它们供能的发电系统。
That would increase the efficiency of the blades and extend the working life of the generator systems they power, says Stephen Hallett, a member of the Bristol team.
俄勒冈大学和俄勒冈州立大学的研究人员对中美洲的切叶蚁进行了研究,他们发现,蚁群中的年轻和精力充沛的成员被委派去做最艰难的工作——将蚁群收集起来的叶片切成碎片。这些身强力壮的切叶蚁用它们锐利的牙齿做起这种工作来很有效率,但是随着年龄的增长,它们的牙齿也会变得破旧而迟钝。
A study of Central American leaf-cutter ants has shown that the younger and more vigorous members of the colony are given the toughest job of cutting through the leaves they harvest.
子粒、叶片含氮量和氮利用效率的遗传率相对较高。
The heritability of N content in grain and leaf and N utilization efficiency were high.
先进的小发动机涡轮的流量小,叶片短,展弦比低,二次损失及叶尖漏泄损失大,效率低,温度高冷效差。
The advanced small gasturbines feature small mass flow ratio, short vanes and blades with low aspect, high second flow and blade tip leakage losses, and low efficiency.
叶片是航空发动机的重要零件之一,叶片的加工精度和效率对于叶片的加工来说至关重要。
The blade is one of the important parts of aeroengine. Efficiency and precision are important for the blades' machining.
如果冷凝器叶片被污垢堵塞或者叶片弯曲,这会影响到冷凝器的冷却制冷剂效率。
If the condenser fins are clogged with dirt or bent over, it will affect the ability of the condenser to cool the refrigerant.
优化气流结构和风扇的叶片形状设计,降低输入功率,提高效率。
Optimize airflow structure, fan's blade shape design, reduce input power, and improve efficiency.
采用喷涂封严涂层的方法调整叶片端部与发动机涡轮机壳之间的间隙以提高发动机效率。
Seal coating sprayed is currently used to adjust the gap between the blade tip and engine casing and improve engine efficiency.
以大豆、黄瓜、水稻、玉米的幼嫩叶片为材料,采用4种不同的DNA提取方法,比较不同方法的DNA提取效率。
Compare the efficiency of 4 various DNA extraction methods on different plants, using the young leaves of soybean, cucumber, rice and maize as materials.
另外表明,水分供应不足,叶片的羧化效率和表观量子。
In short supply of water, leaf carboxylation efficiency and apparent quantum yield were cut down.
它的研制成功,极大地提高了叶片的制造精度,进而提高了水轮机的效率,产生了巨大的经济和社会效益。
Its development success makes the manufacturing precision of runner blades higher, leads to increase the efficiency of hydro-turbine, and produce the big economical and social benefit.
叶片数对扬程切割指数的影响最大,对流量切割指数影响较小,对轴功率和效率切割指数影响最小。
The effect of the number of blades on the head exponent is the largest, on flow rate exponent is lager and on power, efficiency exponents are minimal.
讨论了改变叶片数目,增加叶片厚度,调整分流叶片周向位置以及增加间隙高度等对离心叶轮流量、压比和效率等总体性能的影响。
The influence of blade number, blade thickness, location of splitter blades and tip clearance on mass flow, pressure ratio and efficiency is showed.
湿度对蒸汽轮机效率的影响及其对叶片的浸蚀作用极其复杂。
The effect of the wetness on steam turbine efficiency and the etching effect on the blade were very complex.
本发明的叶片磨损小、可达到双吸双磨功能、磨煤效率高、耗能少、无需密封、煤粉细度可达200目以上、主轴传动部分不发热、结构紧凑、体积小、功率大、成本低。
Its advantages are less abrasion of blades, high efficiency and fineness of coal cup to 200 meshes or more, compact structure, small size, high power and low cost.
在气-水膜两相流动试验装置上对平板空心叶片去湿缝隙的去水效率进行了试验研究。
This paper reports a experimental research on the water removal efficiency from hollow stationary blades by suction slot carried out on a gas-water film two-phase flow test equipment.
结果表明,野生一粒小麦在叶片维管束解剖结构、水分利用效率及光合速率对光、温和CO_2的反应方面类似于C_4植物。
The results indicated that the wilddiploid T. boeoticum was similar to C_4 plants in leaf anatomy and in the response to light, temperature, CO_2 concentration and water.
结果表明,末排低压动叶通过采用正弯叶片造型,可以在保证效率保持不变的前提条件下,使得高低压涡轮出功比降低2.6%。
The results show that , the ratio of the output power of vaneless counter-rotating turbine can reduce 2.6% at the same turbine efficiency when the low pressure rotor curves positive.
实验表明,综合考虑搅拌功率和混合时间,双叶片组合式搅拌器在这两种介质中的混合效率最高。
The experiment shows that the mixing efficiency of the combinatory two-blade impellers in water and CMC solution is highest in a comprehensive consideration of stirring power and mixing time.
混流技术能有效提高涡轮增压器的效率,本文介绍了HP55增压器混流涡轮的叶片成形和设计,以及该增压器在CYQD32系列柴油机上的应用。
The technology of mixflow can improve the efficiency of turbochargers. The design of HP55 mixflow turbine was introduced, and was applied to CYQD32 series diesel engine.
柔性摆线转子泵集齿轮泵与叶片泵优点于一身比同类容积泵的效率提高10%以上。
Flexible set cycloid gear pump rotor pump vane pump with the advantages of a similar volume than pump more than 10% efficiency.
基于PC机的汽轮机叶片静态频率测量系统可大大提高测量的精确度和工作效率。
The measurement accuracy and work efficiency are greatly improved by turbine blade natural frequency measurement system based on industrial PC.
实验证明通过改变叶片型线参数方程中的速度系数的取值,可以控制边界层的分离,进而改善泵的性能,提高其水力效率。
The experiment shows that by changing the velocity coefficient , the separation of boundary layer on pump vane can be controlled, and the performance of pump is improved and its hydraulic efficiency.
水分低水位管理蒸腾速率、上部干物重和叶片水分利用效率下降。
Leaf transpiration rate, above ground dry weight and water use efficiency were all decreased under the conditions of low water level.
结果表明,双叶片搅拌机极大改善了低效区的搅拌性能,和同型常规搅拌机相比提高了搅拌效率和质量。
The result indicate that the double mixing-blades mixer improves mixing performance of inefficient zone , mixing quality and productivity of whole machine highly.
试验结果表明机翼型叶片在全压效率、稳定运行范围及高效运行范围比相应的板型叶片具有优越性;
The measurements show that the airfoil blade fan prevails over the plate one in the aspects of total pressure efficiency, stable operation range and high efficient operation range.
实践证明,水轮机叶片数控加工工艺方法具有加工效率高、精度高等优越性,使转轮加工质量大幅度提高。
Practice proved that the nc machining of hydraulic turbine blades features high machining efficiency and high accuracy, and dramatically improves the machining quality of turbine wheels.
蒸汽透平中的湿蒸汽流动降低了级运行效率,同时也造成了叶片可靠性下降。
Wet steam flows within steam turbine leads to two major problems, loss in turbine stage efficiency and blade erosion.
蒸汽透平中的湿蒸汽流动降低了级运行效率,同时也造成了叶片可靠性下降。
Wet steam flows within steam turbine leads to two major problems, loss in turbine stage efficiency and blade erosion.
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