研究了1，2，4-三氯苯和萘对抽穗期水稻叶片光合特性的影响。
The effects of 1,2,4-trichlorobenzene and naphthalene on photosynthetic characteristics of rice leaves were studied.
分析比较了三个发育阶段银杏叶片光合作用的特性及规律。
The laws and characteristics of three development stages were analysed and compared.
计算中采用的风电场数学模型考虑了风电机组的叶片、轮毂、齿轮箱和连轴器以及异步发电机的特性。
The mathematical model of wind turbine applied in the calculation takes account of characteristics of the blades, hub, gearbox, shaft and asynchronous generator.
用ANSYS软件对某发动机叶片的振动特性进行了分析。
Vibrating characteristic is analyzed on an engine vane with the software ANSYS.
但是仅靠在收获时对最上部叶片的分开采收，还不足以生产出具有期望理化特性的烟叶。
However, separation of the uppermost leaves during harvest may not be enough to produce cured tobacco with the desired chemical and physical characteristics.
阐述了风机设计中叶片翼型的几何特性、用解析方法叠加翼型，以及建立翼型周线方程的方法。
Geometric characteristics for blade aerofoils during fan design, superposed aerofoils by analytic method, and the method to set up aerofoil circumference equation method are described.
对叶片弦中区内部有、无冲击射流的气膜出流冷却方式中，冷气侧气膜孔局部换热特性进行了实验研究。
Experimental investigation of the turbine blade local heat transfer characteristics at the inner side of the mid-chord region near film holes was conducted, with and without impingement cooling.
通过与模态试验结果的比较可以发现，采用有限元法分析动叶片的振动特性是可靠和有效的。
We can find it is reliable and effective to use FEA to analyze the vibration characters of moving blades by comparing with the results of modal experiment.
在田间和试验室条件下研究了龙眼叶片的光合作用特性。
The photosynthetic characteristics of Longan leaves under field and laboratory conditions were studied.
利用红外气体分析仪测定甘薯叶片发育和衰老过程中光合特性的变化。
The photosynthetic characteristics during development and senescence of sweet potato leaves were measured by using PQW infrared gas analyzer.
讨论了一种可用于旋转叶片的动力吸振器基本原理和动态特性。
The mechanism and dynamic characteristics of a dynamic vibration absorber used in rotating blades are discussed.
本文就番茄长季节栽培中叶片的生长特性进行了观测和研究。
The leaf growth characteristic of tomato long-season culture in greenhouse was observed and studied in this paper.
为了研究成组阻尼叶片的特性，本文建立了双边微滑移模型。
In order to study the characteristic of grouped damping blade, the Two-Bar Microslip Model is developed.
该方法稍加推广即可研究循环叶片组的振动特性，为指导带缘板阻尼器叶片的减振设计奠定了基础。
The method can be used to calculate the vibration features of circular blades with friction damper, so it provided the foundation for designing the blade with friction damper.
利用这一特性，把两个万向节机构和圆柱齿轮机构组合形成了叶片差速泵的驱动系统。
By using the characteristics, the combination of two Hooke's joints with cylindrical gear mechanisms forms the driving system of a differential velocity vane pump.
研究结果表明，叶片的光合特性与其发育和衰老程度有关。
The results of research indicated that the photosynthetic characteristics is relative to the degree of development and senescence of leaves.
对叶轮叶片振动特性进行研究，模态分析是一种十分有效的方法。
Modal analysis is a very effective method for the study of vibration characteristic of impeller blade.
土壤和气候的不同、以及施肥、病虫害的管理、收获和调制方法的不同，生产出来的叶片有着不同的特性。
Differences in soil and climate produce leaves that have specific characteristics and require different methods of fertilization, insect and disease management, harvesting and curing.
首先推导出回复力作用下的复合平板叶片的弯曲振动特性。
The flexural vibration characteristics of the composite plate affected under recovery force have been derived.
在运行条件下实测燃气轮机轮盘和叶片的振动特性，是燃气轮机参数测量中最困难的问题之一。
The measurement under gas turbine operating conditions of disk and blade vibration characteristics constitutes one of the most difficult problems in gas turbine measurement techniques.
同时还对高速转动时空压机转子叶片的振动特性进行了分析。
Also analyzed was the vibration characteristics of the blades of the rotor turning at high speed.
计算了叶片在不同工作载荷下的静态特性，得到了其应力分布和变形规律。
The static characteristics of the blade subjected to different loads are analyzed, obtains the stress and displacement variation rule.
本文在田间种植条件下，比较了需水特性不同的两个冬小麦品种河农859和河农326以叶片光合速率为主的光合性能。
In this paper, photosynthetic performances of two wheat varieties, Henong 859 and Henong 326, which had different water requiring property, were compared under field conditions.
本文用实验的方法模拟研究了涡轮叶片尾缘出流对带叉排扰流柱阵列的内冷通道的对流换热特性的影响。
An experimental research was conducted to simulate the effect of trailing edge ejection of turbine blades on heat transfer of the inner cooling passage with staggered pin fin array.
研究了大豆叶片逐步展开过程中的色素组成、气体交换、荧光动力学以及叶片角度等特性。
Chloroplast pigments, gas exchange, chlorophyll a fluorescence kinetics and leaf orientation were extensively studied in soybean leaves from emergency to full expansion.
这些品种与其它品种比较具有耐寒性差、耐高温性好、生长速度快、叶片光合效能强和产量突出等生理特性。
Compared with other maize hybrids, they are characterized by poor low temperature resistance, good high temperature tolerance, fast growth, high photosynthetic efficiency of leaves and high yield etc.
在改进后的损失模型中，定义了新的叶片负荷系数，并用它作为一个特性准则导出了叶型损失计算公式。
In this improved loss model, a new profile loading coefficient is defined and using it as a characteristic criterion, formula for estimating the profile toss coefficient is derived.
与线性动力系统不同，阻尼叶片的频率不再是它的固有特性，其频率受外界激振力的影响。
The damped blades is a nonlinear dynamic system, so its natural frequency can be influenced by external force.
本文介绍关于两种转子叶片振动特性的比较研究，这两种叶片分别是用销钉和纵树形或燕尾形榫头联接到旋转轮盘上的。
This paper introduces a comparative study of vibration characteristics of two types of rotor blades that are attached to the disk by fir-tree root and pin respectively.
本文介绍关于两种转子叶片振动特性的比较研究，这两种叶片分别是用销钉和纵树形或燕尾形榫头联接到旋转轮盘上的。
This paper introduces a comparative study of vibration characteristics of two types of rotor blades that are attached to the disk by fir-tree root and pin respectively.
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