sound power的例句大全

the progress in the measurement of sound power level of noise source

噪声源声功率级测量的进展

According to the imitation of the curve of sound power measurement error, the method was put forward to determine the size of rectangular measuring surface, the distance from scanning measuring surface to sound source, and the scanning linear density.

根据声功率测量误差仿真曲线，给出了测量机器声功率时矩形测量面尺寸、测量面距声源距离、扫描线密度的确定方法。

sound power level measurement for pipa-one of chinese traditional instruments

中国传统民族乐器琵琶的声功率测试

measurement and calculation of sound pressure level and sound power level.

声压级及声功率级的测量和计算。

a study on the scanning path error for determing sound power level using sound intensity scanning

基于扫描声强法的声功率测量扫描路径误差研究

Calculation Analysis of Cutting Sound Power in Small-Sized Disk Saw Machine

小型圆盘锯机锯切声功率的计算分析

the sound power level calculation of similar fans

相似风机声功率级的估算

determination of sound power level for noise emitted by displacement compressors& engineering method

GB/T4980-1985容积式压缩机噪声声功率级的测定&工程法

method for semi-anechoic room used for measurement of sound power level of reference sound sources

标准声源声功率级的半消声室检测法

The dogs of experiment group undergoing simulative partial costectomy and costophrenic angle closure were continuously exposed to HIFU with 0.8 MHz waves, 120 mm focal distance, fixed-point exposure, and 220 W sound power for 90 seconds. The liver damage area were measured and observed pathologically.

以0.8MHz、焦距120mm、定点点打、声功率220W连续照射两组实验犬肝右叶90s，对肝毁损灶进行面积和体积测定及病理学检查。

Study on Vibration Measurement Method of Sound Power Level Emitted by Large and Medium Electric Machines

大中型电机声功率的振动测量法研究

measurement on the sound power level for mechanical noise

机器噪声声功率级的简测方法的研究

experimental research on the accuracy of sound power level radiated from a tool machine using sound field indicators

利用声场指数确定机床辐射声功率级测量精度的实验研究

The sound power level of oil pan was estimated by the method of vibration velocity.

通过振动速度法，估算了油底壳辐射的声功率级。

There are specific Powered Mechanical Equipment ( PME) with sound power lower than those specified in Technical Memorandum on Noise from Construction other than Percussive Piling ( TM1).

特定的机动设备，其声功率较《管制建筑工程噪音（撞击式打桩除外）技术备忘录》指明的其他设备为低。

the relationship between sound power level and sound pressure level radiated by the fan in a suck pipe

吸气管道中风机辐射的声功率级与声压级的关系

Sound Power Measurement in a Narrow Room Chat Room Next Room

狭小空间条件下的声功率测量

determination of sound power level for noise emitted by woodworking machinery

GB/T3770-1983木工机床噪声声功率级的测定

Measuring And analysing for the sound power level of Roving Frame

粗纱机噪声声功率级的测定与分析

A plate is involved to show the mode shapes of the acoustic power modes, sound power computation using the power modes and the modal truncation of the power modes.

文中以板结构声辐射为例对声功率模态的振型、声功率模态下的声功率计算和模态截断进行了计算分析并对结构声辐射的声功率模态控制进行了讨论。