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- New Method for Sound Power Calculation 一种声强计算的新方法
- sound power calculation 声功率计算
- Error Analysis Based on Sound Power Calculating via Geometrical Average Sound Pressure 基于几何平均声压的声强计算的误差分析
- Methods for Measurement Calculation of Sound Emitted by Machinery and Equipment at Work Stations and other Specified Positions from Sound Power Levels. 声源级的工作台或其它特定的场所由机器和设备发出的声音的计算方法。
- A power calculation method of the heat transfer oil stove is summarized by calculation. 文章通过实际计算,总结了导热油炉功率计算的一种方法。
- The author,based on the actual production,presents a new method for power calculation for milling discontinuous plane. 结合生产实际情况,介绍不连续平面的铣削计算的一种新方法。
- The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure. 摘要利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。
- The errors of intraocular lens power calculation may be caused by inaccurate axial length measurement or unstable keratometric reading. 摘要造成人工水晶体度数计算之误差的主要因素为不正确眼轴长及角膜曲度之测量。
- An innovative implementation of the skin concept for the reduction of the radiated sound power from a vibrating structure is proposed. 摘要 本文的目的为研究在有限平板之双曲线热传导的正、逆算问题受表面辐射的影响。
- This paper analyzes the motion of a parlicle of material inside a tumbling mill drum and derives a power calculation formula of tumbling mill. 本文分析了物料颗粒在磨矿机筒体中运动的特征位置;并推演出磨矿机功率的计算分式,为进一步研究磨矿机的性能提供了理论基础。
- The Sound Power Level Calculation of Similar Fans 相似风机声功率级的估算
- The figures can be used to easily calculate the sound power level of the sound source inside the duct through measuring the SPL at a single point outside of the duct. 利用这些图和简单公式,通过测量管外一点的声压级就可确定管内声源声功率。
- The comparison of power calculation results and rationing projects shows that the supplementary power project is prior to the supplementary equipment proj... 功率计算及各种方案比较结果表明,功率备用方案要优于机组备用方案。
- The experimental tests involved the total sound power level, the sound pressure spectra and the sound source directivity of the AFF are firstly presented. 本文首先进行了轴流风扇总声功率、声压频谱及声源指向性等声学特性的实验测试。
- It is shown that the numerical results of the total sound power level and the sound directivity of the original AFF agree well with those results by testing. 结果表明，采用数值计算的方法得到原型轴流风扇的总声功率级和声源指向性与实验测试结果吻合较好。
- After two-grade demarcate, the A/B/C sound pressure level, the gross sound pressure level and the sound power level are produced with the application of A, B, C level fuzzy net. 通过二级标定，引入A、B、C三档模糊计权网络，生成A、B、C三档声级及总声级，求取声功率级，进而依据三段评判对噪声进行进一步的评判。
- The starting response frequency of the sandwich planes heightened and the absorbing sound power at the lower frequency intensified with augmenting honeycomb thickness. 蜂窝芯厚度增加，超振频率增大，声能在低频处的吸收增加；
- In this paper, we prepare a software for the power calculation of high-explosive shells and the visualized analysis on the performance from the point of high-explosive shells design. 从榴弹设计角度编制完成了榴弹威力计算与性能可视化分析软件;本软件充分考虑了用户需求和软件实用性,能生成各种特性曲线,提供设计参考;同时具有智能捕捉查询功能。
- Powered mechanical equipments (PME) of sound power levels (SWL) not exceeding those listed in Annex A shall be used. 建造期间使用的低噪音施工设备，其声功率级不能超出附件A所列出的。
- In order to satisfy the needs and depreciate the iatrical cost, we need a kind of cardiogram detecting system which can communicate with the PC as to use its powerful calculation. 为了满足对心电监护设备的需求，降低医疗成本，需要一种能与 PC 机进行通信和数据传输、利用 PC 机强大运算能力的心电检测系统。
