表观量子效率(aqy)可在一定程度上反映PSII光化学效率的大小。
Apparent quantum yield (AQY) can partly reflect the photochemistry activity of PSII.
图4对照及缺铁植株非光化学猝灭光化学效率(PQ)光强的响应。左侧为玉米，右侧为大豆。
Fig. 4 Response of NPQ to PFD in control and Fe-deficient plants. The left side is maize; the right side is soybean.
因此位图的地位依然很重要，但是对于那些可以分解成基本形状的图像，比如图表、标志、和化学公式等等，矢量文件格式天生就具有较高的效率。
So bitmaps play a useful role, but for those images that can be decomposed into basic shapes such as diagrams, logos, and chemical formulas, a vector file format is inherently more efficient.
一个工程师称核能火箭的效率天生比它们的化学兄弟火箭高一倍。
One engineer claims nuclear rockets are inherently twice as efficient as their chemical brethren.
化学家们设计创造出分子的能力在其使用效率和多功能用途上让人不寒而栗。
The ability of chemists to design and make these molecules is almost fearsome in its efficiency and versatility.
电化学电池，特别是锂电池，成为了最佳选择，因为它们把化学能转变为电能效率很高并且无有毒物质释放。
Electrochemical batteries, lithium ones in particular, are the best option, converting stored chemical energy into electricity with high efficiency and without toxic emissions.
其优点包括通过绕过化学处理和数字传输能力和增强影像的时间效率。
Advantages include time efficiency through bypassing chemical processing and the ability to digitally transfer and enhance images.
“你的身体会变得非常的有效率，”他说，“你把一个我们以前所没有发现它存在的化学通道，叫作Sirtuin通道，给打开了。”
"The body gets really efficient," he says. "You turn on this new chemical pathway we never knew existed called the sirtuin pathway."
我们在水中加入一些化学剂和采用高压水喷淋来提高效率。
We use chemical dosing and high pressure atomized water spraying to improve the efficiency.
但其排气速度却异常惊人，大约为化学燃料火箭的十倍—这使得离子推进器的效率非常高。
The exhaust velocity, though, is enormous—more than ten times that of a chemical rocket—and this makes ion propulsion extremely efficient.
虽然汽油发动机改进了许多，但是，在化学能量转变为机械能量过程中，发动机的效率仍然不高。
Although gasoline engines have improved a lot, they are still not very efficient at turning chemical energy into mechanical power.
气浮法的效率主要取决于固体颗粒直径、气泡直径和固体颗粒表面的化学性质。
Solid particle removal efficiency is chiefly decided by solid particle size, bubble size and the chemical properties of the solid particle surface.
因此化学钢化能提高太阳能电池长期工作的可靠性，对提高太阳能电池的使用效率及寿命具有实际意义。
Consequently, ion exchange strengthened cover glass can increase the reliability of solar cell, which can improve service efficiency and prolong the life of solar cell.
而且，肺炎可升高一种称为细胞因子的化学信号的血液浓度，此化学因子可促进血栓形成并降低心脏工作效率。
Also, pneumonia raises blood levels of a type of a chemical signal called a cytokine that promotes the formation of blood clots and that decreases the efficiency of the heart.
综合考虑，影响光合作用的内外部因素可以通过植物将光能转变为化学能的效率来评价。
Taken together, the external and internal factors may be evaluated in terms of the efficiency of the plant in converting solar energy into chemical energy.
摘要在药物化学实验教学中，采用双语教学，提高课堂效率，提高英语学习水平，对培养学生的学习积极性起到一定的作用。
AbstractTeaching at Medicinal chemistry, we make use of bilinggual approach, it can improve the efficiency in the class, and enhance the ability of learning English to the students.
废水处理厂成功地利用氧提高了他们的化学过程的效率。
Wastewater treatment plants successfully employ oxygen to enhance their chemical process efficiency.
具有良好的传热效率，更好地抵抗热裂化和化学氧化。
They have good heat transfer efficiency with better resistance to thermal cracking and chemical oxidation.
与二次采油相比，它借助物理和化学的双重作用，提高驱油的波及体积和效率。
Compared to secondary recovery, it improves the sweep volume and efficiency of oil displacement by the AIDS of physical and chemical dual effect.
在分析废水中油粒的表面化学性质及浮选剂除油效率基础上，设计出高效浮选剂分子的结构式。
Then It has design molecule structure of floatation agent by analysing the chemical properties of suspending substances in wastewater and the efficiency of removing oil in wastewater.
化学工程研究的目的是提高大型单元设备的可操作性和效率。
The purpose of chemical engineering research lies in improving the operability and efficiency of large scale unit equipment.
近年来，化学气相沉积(CVD)法逐渐应用于车针后续处理过程之中，增强了车针的耐磨性和切削效率。
Recently, chemical vapor deposition (CVD) is gradually used in order to enhance the wear resistance and cutting efficiency of bures.
基于差动原理对HF酸恒定化学蚀刻速率法进行改进，以降低环境(温度、HF酸浓度等)变化对测量结果的影响，从而提高测量效率和测量准确性。
Constancy of chemical etch rate method was modified so as to reduce the influencing factors such as temperature and concentration of HF acid. The efficiency and accuracy are improved.
比较了两种化学后处理方法对衍射效率和信噪比的影响。
Two methods of chemical processing, which have an effect upon the diffractive efficiency and the signal-to-noise ratio, were compared.
化纤切断刀是化学短纤维生产中的关键零件，对纤维的切割质量、成本和生产效率有着重要的影响。
The cutter blade is a key part in the process of the staple production and has an important effect on the staple quality, cost and production efficiency.
供体细胞的细胞周期、细胞类型、冷冻处理和化学激活等方面都可能影响动物克隆的效率。
The effect of using donor cells of different cell cycle, cell type, chemical activation, as well as refrigeration, on cloning animal has been summarized.
实验结果显示，化学破乳剂和超声波联合作用可以进一步提高原油的破乳脱水效率。
The experimental results of four types of oil emulsions show that high efficiency of demulsifying oil emulsions can be gained using this method.
改进和提高化学消油剂处理海面溢油的效率是防治海洋溢油急待解决的研究课题之一。
Presently, to improve the effectiveness of chemical dispersants is one of the most urgent issues in treating oil spill at sea.
介绍了硼的物理化学特性和燃烧机理，硼的点火延迟期长、燃烧效率低是由其本身的特性所决定的。
Physicochemical properties and combustion mechanism of boron are introduced. Long ignition delay time and low combustion efficiency are due to the properties of boron itself.
介绍了硼的物理化学特性和燃烧机理，硼的点火延迟期长、燃烧效率低是由其本身的特性所决定的。
Physicochemical properties and combustion mechanism of boron are introduced. Long ignition delay time and low combustion efficiency are due to the properties of boron itself.
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