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- The control object is the total acoustic power level of net power flow input to the main system in whole excitation frequency band. An optimum design method of Multiple Dynamic Vibra - tion Absorbers(MDVA)is studied. 本文以简支薄板为主振系统,对其附加复式动力吸振器,提出以输入系统的净功率流在整个激励频带内的总声功率级为控制量的优化设计方法。
- Lead alloys as solder for transducers used in high-powered (designated to operate for several hours at acoustic power levels of 125 dB SPL and above) loudspeakers. 用作大功率扬声器(用在长时间操作125分贝以上的音响系统)的传感器焊料中的铅合金。
- acoustic power level 声功率级
- Any difference in power level is not significant. 拍子本身的力量等级差异不显著。
- We don't use any Bots or Macros to power level your character. 冲击力传到车身时，可能引起汽车机件的早期损坏；
- Also two important energy forms of thermoacoustic system: acoustic power and total power are discussed in details. 在此基础上，阐述了热声系统中两种重要的能量形式：声功和总能流，得到了它们的可用公式。
- In this paper,a method for measuring acoustic power of plane piston transducer based on calorimetry is presented. 介绍了一种基于量热法的平面换能器声功率测量的方法。
- Warcraft Power Level Julia Bertram was only twelve, and Maria but a year older. 想知道打篮球是不是那么 容易 ，就去找跟自己差不多年纪的试试，垃圾！
- The RF output power level is maximum for 13.5 VDC and minimum at 2 VDC. RF功率输出的是在13.;5V时候最大，而在2V时候最小。
- A maximum acoustic power 43.1 W output to RC load of 110 cm~3 capacitance was measured with helium filling of 2.1 MPa and heating power of 2 000 W. 以氦气为工质;在充气压力2.;1 MPa、加热功率2 000 W的条件下;采用110 cm3的气库;在1台驻波型热声发动机上获得了最大43
- We provide a world of Warcraft Power levelinG. 首先检查按键是否能够将触点压在一起，一切正常。
- A thermoacoustic engine converts thermal energy into acoustic power by thermoacoustic effect without any mechanical moving parts. 热声发动机利用热声效应把热能转化为声功,系统中不存在任何机械运动部件。
- Acoustic power and ultrasonic frequency are both important factors of the degradation of paper mill wastewater ultrasound. 声功率及声频率对造纸黑液的超声降解均有影响。 (5) 超声时向溶液中通入不同溶解气体均能提高超声辐射的效果。
- However, the highest transfer efficiency and largest acoustic power cannot be obtained simultaneously, therefore a trade-off condition must be adopted. 然而系统效率与输出声功率不能同时达到最大值,因此在实际应用中只能采取折中的效果。
- A unit that describes the ratio of two power levels. 描述两个功率电平比值的单位。
- There are three calculation methods of the acoustic power radiated by an electrical machine, which were presented by Jordan, Alger and Yang. 电机电磁噪声的辐射声功率的计算目前广泛采用Alger、Jordan、Yang等人分别提出的三种方法。
- A microphone is a device for converting acoustic power into electric power that has essentially similar wave characteristics. 麦克风是一种装置，其声功率转换成电力，它基本上类似波的特点。
- All solid-state transponders are under development with output power level lower by some 20-30 dB in the 4-6GHz band. 正在研制的全固态转发器在4-6千兆赫频段中的输出功率电平约低20-30分贝.
- In this article, a method to optimize not only the directivity but also the acoustic power of loudspeaker arrays is developed. 摘要提出了同时优化扬声器阵列的指向性和声功率级的方法。
- In consideration of the directivity and acoustic power, the input voltage distribution of a loudspeaker array can be optimized and selected. 运用该方法可以优化扬声器阵列的输入电压分布，获得指向性和声功率级二者兼顾的扬声器阵列。
