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- return circuit wind tunnel 回流式风洞
- low speed closed circuit wind tunnel 回流式低速风洞
- The planes survived the wind tunnel test intact. 这些纸飞机在测试风道中丝毫未损。
- It is not correct to think of the wind tunnel having uniform flow. 设想风洞具有均匀的气流是不正确的。
- Setting very low speeds in a wind tunnel is always a vexatious problem. 在风洞中调出低风速来始终是一个麻烦问题。
- FC return circuit and its characteristics was introduced in this arti-cle. 本文介绍了FC回路及其特点。
- It should be noted that a balance is not always required in a wind tunnel. 应该指出,天平对风洞来说并非是绝对必须的。
- The aerodynamics characteristics of this airfoil is studied in wind tunnel. 进行了翼型的低速气动力性能研究,为附面层特性研究提供了方向。 结果表明,该翼型具有较好的升阻和俯仰特性,但失速特性差。
- Its main return circuit adopts thyristor contactless switch,so can turn off circuit quickly,precisely and reliably. 该系列点焊机主回路均采用晶闸管无触点开关,电路关断时间快、准确、可靠。
- The wind tunnel is produced under a technical cooperation agreement with Ford Co of US. 风洞机是根据与美国福特公司的技术合作协议生产的。
- Any subtle change of capacitance can be measured through the method of modulation on high-frequency harmonic oscillation return circuit. 电容的微小变化可通过对高频谐振回路调制的方法进行测量。
- Any flight test and wind tunnel correlation always suffers from a great number of unknowns. 在对飞行试验与风洞试验进行比较时总有大量的未知数。
- Based on the ampere return circuit theorem, gauss theorem and charge conservation law the concrete form of Displacement current is derived. 本文从安培环路定理、高斯定理及电荷守恒定律出发导出了位移电流的具体形式。
- The experiments were conducted in a wind tunnel at a location 50 ft downwind from the fan. 实验是在风洞中距离风机50英尺处进行。
- The damping derivatives can only be determined experimentally in the wind tunnel or ballistic range. 阻尼导数只能用风洞或弹道试验来确定。
- SPWM is a set of constant amplitude but unconstant width rectangular serial pulse produced by control return circuit to approximate sinusoidal voltage waves. SPWM(正弦脉宽调制)是由控制回路产生一组等幅而不等宽的矩形脉冲列,用来近似正弦电压波。
- In the experiment under the 20 m/s wind tunnel conditions, the wind abrasion modulus is almost zero. 在每秒20米的风洞实验中,吹蚀模数几乎为零。
- In this paper, the initial stage in application of fuzzy logic to aircraft high-angle-of attack aerodynamics using wind tunnel test data is outlined. 本文概述最初阶段利用风洞试验数据应用模糊逻辑研究飞机大攻角空气动力学的情况。
- In the experiment under the 20 m/s wind tunnel conditions,the wind abrasion modulus is almost zero. 在每秒20米的风洞实验中,吹蚀模数几乎为零。
- The paper introduced the function of STB single return circuit intelligent regulator and related the application of the regulator in the course of the malt extract production and improving PID algorithm. 摘要简介了STB单回路智能调节器的性能,并叙述了该调节器在啤酒麦汁糖化过程中的应用及其改进的PID算法。