Low speed wind tunnel experiment requires strict of the wind speed, which requires a wild range of wind speed, high precision, and quick adjustment.
低速风洞实验要求对实验段的风速有严格的控制，要求风速调节范围宽，精度指标高，调节速度快。
The lifetime of the biodegradable mulches was 9 months and of the biodegradable low-tunnel films 6 months.
寿命可生物降解覆盖物为9个月和生物降解性低隧道薄膜的6个月。
The experimental studies on two wing body junctions and wakes were carried out in a low turbulence level wind tunnel.
绕两个翼型-平面的角区流动及其尾迹的实验是在低湍流度风洞中完成的。
The paper also studies the mechanization construction technology of Tunnel Skid-resistance Low-noise Cement Concrete Pavement.
同时论文对抗滑低噪声水泥混凝土路面机械化施工工艺进行了研究。
Elastic monolithic track bed was used for East Qinling Super-long Tunnel for its good elasticity, less maintenance and low cost.
新建铁路东秦岭特长隧道采用弹性整体道床轨道基础，该基础弹性好，减少了线路维修工作量，降低费用。
For a low speed blow down wind tunnel with semi-open test section, the effectiveness of main flow damper in rapidly changing test velocity is verified through experimental research.
通过实验研究证明了用主流阻尼器快速调节半开口直流式低速风洞的实验风速的可行性。
The flow noise reduction of al alloy model with low surface energy coatings have been studied in a water tunnel.
低表面能涂层涂覆在铝合金模型上，考察了其在水筒中低频段降低流噪声的效果。
The road double lines multi-arch tunnel has such advantages as low ground area, easy connection with other lines and so forth, and is adopted more and more widely in high grade road construction.
公路双线连拱隧道以其占地少、与线路连接方便等突出优势在高等级公路建设中被越来越多的采用。
The flow field visualization of a straight HP turbine cascade is conducted in a large-scale low-speed open -loop cascade heat transfer wind tunnel.
在大尺寸低速开式叶栅传热风洞中对一种高压涡轮导向叶栅中的流场进行了流动显示实验研究。
The tunnel phenomenon "is caused by the eye's susceptibility to the low blood flow that occurs with fainting or cardiac arrest," he said.
隧道现象“是由眼睛的易感性低血流量，与发生昏厥或心脏骤停造成的，”他说。
Experimental investigation on the control of dynamic stall type vortex flow was made in a low speed wind tunnel by using phase averaged pressure measurement technique.
本文对动失速型非定常分离涡结构的控制方法，在低速风洞中应用相平均测压技术进行了实验研究。
The flow field of straight HP turbine cascade was investigated experimentally in a large-scale low-speed open-loop cascade heat transfer wind tunnel.
本文在大尺寸低速开式叶栅传热风洞中对一种高压涡轮导向叶栅中的流场进行了实验研究。
In order to study dynamic stall phenomena of an aircraft in portrait at a high Angle of attack, designing a measuring device of heave oscillation for a low speed wind tunnel.
为了研究飞行器在纵向大迎角状态下的动态失速现象，设计了一套用于低速风洞的升沉振动测量装置。
For validating the aerodynamic characteristics of LP turbine guide vane, the wind blow was carried out for test cascade of the guide vane on the low speed annular wind tunnel.
为了考查低压涡轮导向器的气动性能，在低速环形叶栅风洞上对导向器的实验叶栅进行了吹风实验。
Force and PIV local flow measurements were conducted in a low speed wind tunnel to study the effectiveness of serrated Gurney flap at different deflections.
用低速风洞测力试验和襟翼处绕流的PIV测量试验研究锯齿形格尼襟翼在不同偏角下的增升效益。
Film cooling of the surface of a gas turbine blade was studied in a large-scale low-speed opening wind tunnel according to actual requirement of the design of aero-engine.
根据航空发动机设计的实际需要，在大尺寸低速叶栅传热风洞中对涡轮叶片表面的气膜冷却进行了综合性实验研究。
The research in this thesis is focused on the low harmonic variable-frequency power for the system meeting the needs of wind tunnel propeller model testing requirements.
旨在研究满足螺旋桨飞机模型风洞试验要求的为高功率密度电驱动系统供电的低谐波变频电源。
The tester, a kind of civil low speed wind tunnel in nature, consists of wind generator, test platform and control system.
沥青瓦抗风性试验仪由风源、试验平台和控制系统三大部分组成，它是一种民用开式低速风洞。
The difficult problem of the automatization of measurement and CDntrol in the large low speed wind tunnel is an automatization of large power system and large Angle control system.
大型低速风洞测控自动化的难点是大型动力系统的自动化和大型变角控制系统的自动化。
Exterior flow field measurement above smooth and different riblet surfaces was carried out in a low speed wind tunnel by means of hot-wire anemometry.
利用热线风速仪，对光滑表面和多个脊状表面在低速风洞中进行了表面流场测试。
Experimental measurements were carried out in a large-scale low speed heat transfer wind tunnel in Northwestern Poly-technical University.
所有的实验均是在西北工业大学大尺寸低速叶栅传热风洞中完成的。
Based on traditional support system in wind tunnel testing, the combination support system measuring support interference on high angles of attack model in low speed wind tunnel was designed.
基于传统的风洞试验支撑设备，设计了用于低速风洞测量大攻角模型支架干扰的组合支撑设备。
In the paper were carried out experiments on two-dimensional nozzle flow with and without incoming swirling in a low-speed wind tunnel.
本文介绍了在低速射流风洞上开展的二维喷管来流带旋涡的模拟实验。
A type of low speed wind tunnel used in research on forestry protection and its structure, function and principle of the design is introduced.
介绍一种用于森林保护科研试验的低速风洞的构造、性能和设计原理。
The low speed wind tunnel data acquiring and the closed loop controlling of wind velocity are realized by PLC and human machine interface and inverter from Fuji.
采用富士plc、人机界面与变频器实现了低速风洞数据采集和风速的闭环控制。
Numerical simulation has been taken to research sting support interference in FL-9 low speed pressurized wind tunnel.
对气动院FL - 9低速增压风洞尾撑支架干扰进行数值计算。
This paper gives a brief description of the whole process of the low-speed wind tunnel test for active flutter suppression of a two-dimensional wing model with trailing edge control surface.
本文简要地阐述了具有后缘控制面的二元机翼模型主动颤振抑制低速风洞试验的全过程。
The tunnel adverse geological faults include faultage, low strength, geological formation and development of loose, non-rock clay, high stress formation and water-rich strata.
隧洞不良地质段包括断层、低强度的软弱夹层、地质构造发育的结构松散地层、非岩性粘土、高地应力地层和富水地层等。
Instead of the sonic nozzle, low supersonic nozzles have been utilized to solve the choking problem in transonic wind tunnel testing of high angle-of-attack and high blockage.
本文介绍用低超声速喷管代替声速喷管，解决了大迎角大堵塞度跨声速实验时的风洞壅塞问题。
Instead of the sonic nozzle, low supersonic nozzles have been utilized to solve the choking problem in transonic wind tunnel testing of high angle-of-attack and high blockage.
本文介绍用低超声速喷管代替声速喷管，解决了大迎角大堵塞度跨声速实验时的风洞壅塞问题。
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