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- Adopts step wave method to measure the timeaverage sound level(equivalent continuous sound level) of the sound level meter. 采用阶梯波法;测试了声级计的时间平均声级;即等效连续声级Leq功能;并对实测值和理论值进行比较.
- Study on testing Leq function of the sound level meter with step wave method 阶梯波法测试声级计Leq功能的研究
- Study on testing L_(eq) function of the sound level meter with step wave method 阶梯波法测试声级计L_(eq)功能的研究
- step wave method 阶梯波法
- Prospecting metal mine goafs by Rayleigh wave method is introduced. 介绍用瑞雷波法检测金属矿山采空区。
- The dead-zone attached with all-digital close-loop Fiber Optic Gyro (FOG) which employs square wave bias modulation and step wave feedback modulation was researched. 针对采用方波偏置调制、阶梯波反馈调制方案的全数字闭环光纤陀螺"死区"现象的机理进行了实验和仿真研究。
- Minimum Detective Height and Height Measurement Accuracy Use Diffraction Wave Method to Detect a Crack Height. 衍射波法测定裂纹高度时的最小可测高度和高度测试精度。
- A M - band CMFB with a side lobe of about 45 dB was designed using the optimum equal wave method. 通过分析M带滤波器组和M带复用转换器的完全重构条件;用最优等波纹法设计了一个旁瓣约为45 dB的M带余弦调制滤波器组.
- The sound absorption coefficient of three kinds OSB wallboard were tested by the stationary wave method. 采用驻波管法测定了3种定向结构板(OSB)复合墙体的吸声系数；
- With plane wave method,it is proved that the 1D-USPC shares the same bandgap character. 利用平面波法证明了一维超声光子晶体具有一般一维周期层叠结构光子晶体的禁带特征。
- The theoretical response correlates well with dynamic testing of an engineering pil e by the reflective wave method. 理论计算响应与工程桩的反射波法动测结果有较好的相关性。
- The bandgap structure of one-dimensional photonic crystal was calculated and derived with the plane wave method(PWM). 用平面波法研究了椭圆钢柱与环氧树脂组成的三维简立方晶格声子晶体的带隙结构。
- Incorporating quality detection of highway engineering,the principles of Rayleigh wave method are discussed. 结合道路工程路基施工质量检测,介绍了瑞利波测试技术的方法和原理。
- The result showed that surface wave method can find out concrete s flaws,in case its parameters are correctly chosen. 结果表明:只要参数选取合理,面波法能够探测出混凝土缺陷,并且效果明显。
- Using seismic image method and low-strain reflected wave method, the paper evaluates the quality of pile daises. 该文介绍了用地震映象和低应变反射综合检测桩承台,评价桩承台质量的方法。
- The He 2+ +H Impact Ionization process is investigated using a continuum distorted wave method with the eikonal initial_state(CDW_EIS) approximation. 利用初态程函近似的连续扭曲波方法研究了He2+离子与H原子的碰撞电离过程.
- He bounced into the room with a springy step. 他以轻快的跑步跳进房间。
- The application of inter borehole acoustic wave method to probing deep cracks in mass concrete can effectively solve the above mentioned problems. 而应用声波跨孔法进行大体积混凝土结构的深裂缝检测可有效地解决上述问题。
- Besides,constant current and chopping wave method and triangle-wave driving method were adopted to improve the toque performance. 采用恒流技术结合三角波形的高性能驱动方式,改善了电机的运行性能,并实际证实了该控制技术的可行性。
- I hope my ideas are in step with public opinion. 我希望我的想法跟公众舆论是一致的。
