noise abatement wall

Abrasion and erosion of minicrystal in sugar serum is the main reason that made rotating drum's thickness decrease.

通过现场检查、试样检测和应力分析,确定转鼓壁厚严重减薄是该离心机事故的主要原因,而转鼓壁厚减薄的主要原因是糖浆液中的微晶粒磨损和冲蚀转鼓。

Effects of pressing die's boosting function on wall thinning and springback in NC bending process of thin-walled tube with large diameter;

助推作用对大口径铝合金薄壁管数控弯曲壁厚减薄和回弹的影响

Outwall thinning is a main flaw in tube NC bending process,especially for the thin-walled tube with a small bending radius(R/D≤2).

外侧壁厚减薄是弯管成形中容易出现的加工缺陷之一,对于薄壁管小弯曲半径(R/D≤2)数控弯曲成形尤为严重。

Wall thinning is a main flaw in tube NC bending process,especially for the thin-walled tube with a small bending radius(R/D≤2).

外侧壁厚减薄是弯管成形中容易出现的加工缺陷之一,对于薄壁管小弯曲半径(R/D(?)2)数控弯曲成形尤为严重。

radiator louver antisqueak

散热器百叶窗减声片

sound attenuation

消声器（噪声衰减装置）

the dull boom of distant breaking waves; muffled drums; the muffled noises of the street; muted trumpets.

渐弱渐远的潮汐声；减弱的鼓声；大街上减弱的喧闹声；减弱的喇叭声。

an organ stop resulting in a soft muted sound.

一种减弱声音的调音器。

The sand muffled the hoofbeats.

沙子使得蹄声减弱了

To detract from the authority, reputation, or prestige of.

减损（权势、声誉）使权势、声誉或地位降低

He began to howl and diminuendoed down to a mutter

他始而大喊大叫，后来声音减低到小声咕哝。

Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method

GB/T7584-1987声学护耳器声衰减的测量主观法

STUDY OF ECHO THRESHOLD FOR DIFFERENT KINDS OF SOUND SIGNALS

不同类型声信号的衰减延迟与回声阈的研究

STUDY OF THE ACOUSTIC NONLINEARITY PARAMETERS IN HIGH ATTENUATION BIOLOGICAL MEDIA

高声衰减生物媒质非线性声参量的研究

Based on this model the influence of acoustic levitation on friction reduction is calculated.

用该模型计算了声悬浮对超声振动减摩的影响。

Ultrasonic Density Meter Design Based on Ultrasonic Echo Attenuation Theory

基于超声波回波衰减理论的超声波浓度计设计

Kraken Marine Acoustic Model and Its Numerical Experiment for Acoustic Propagation and Decay

Kraken海洋声学模型及其声传播与衰减的数值试验

Easy to be sealed, little dust, low noise, improving environmental pollution.

容易密封，粉尘少，噪声小，减少公害。

gradually diminishing in brightness or loudness or strength.

声音、力量或亮度的逐渐减弱。

The driver deadened the noise of the car with a new muffler.

司机安装了新的消声器减少汽车嗓音。

The storm blew over quickly.The scandal will soon blow over.

风暴迅速减退。丑闻将很快销声匿迹

Move the slider bar to increase or decrease your speaker volume

请移动滚动条增大或减小扬声器音量