消声室

Maintain test and measurement area, including anechoic chamber, rooftop measurement area, and listening rooms.

维护测试和测量区域，包括消声室、楼顶测量区域和听音室

An anechoic chamber is the only place in which a speakerphone will work perfectly.

消声室是喇叭扩音器唯一能够完好工作的场所。

By Xin now has 450 employees, including engineers and technicians accounted for 25%, by Xin's technology, processes and key production equipment imported from Japan, full anechoic chamber design and 100,000 purification workshop.

增鑫现拥有职工450人，其中工程技术人员占25%，增鑫公司的技术、工艺及主要生产设备由日本引进，全消声室设计和十万级净化车间。

Faced with the current rapid development of digital communications time, the company established a new product development-oriented in order to continuously improve quality, meet customer needs as the goal, the introduction of advanced equipment and production technology, and equipped with standard anechoic chamber and dust-free purification workshop and other facilities to ensure that the production environment and product quality stability.

面对当前发展迅速的数字通讯时代，公司确立了以新产品开发为导向，以不断提升品质，满足客户需要为目标，引进欧美先进设备和生产技术，并配备标准消声室和无尘净化车间等设施，保证了生产环境和产品品质的稳定性。

The measuring microphone shall be placed 5cm from the loudspeaker in an anechoic chamber, on axis.

测量麦克风应该在消声室里离喇叭5迷离的地方放置着，在基准线位置。

The directivity responses of the speaker with and without the reflector are compared in simulation and verified with measurement.

文章模拟比较了扬声器加与不加反射器的指向性响应，并在消声室里进行实验验证。

Our products cover anechoic chamber, acoustic test facilities, sound enclosure, recording room, audiometric room, acoustic door and acoustic panels.

产品涵盖消声室、隔声室等声学测试设施、录音室、测听室等专业用房、隔声罩、声屏障等降噪装置、以及隔声门、隔声板、吸声板、消声器等专业产品。

Relying on military defense technology company, has specialized electromagnetic shielding of electronic and machinery product design experts, advanced sheet metal, mold processing, and production of smart cards and laser processing equipment, to have access to professional certification of metal welding, integrated wiring, HVAC, Fire control, security, network installation commissioning of the scene of several engineers, to engage in independent high-performance computer room, welding and assembly-type electromagnetic shielding room, conference room confidentiality shield silencers, CA and Certification Center, MRI MRI room, ear-room, Brain EMG room, industrial design and construction of medical anechoic chamber.

公司依托国防军工技术、拥有专业的电磁屏蔽及机械电子产品设计专家，拥有先进的钣金、模具加工、智能卡生产及激光加工设备，有获得专业认证的金属焊接、综合布线、暖通空调、消防控制、安全防范、网络调试的现场安装工程师数名、能够独立从事高性能计算机机房、焊接及组装式电磁屏蔽室、屏蔽消音保密会议室、CA认证中心、MRI核磁共振室、耳音室、脑肌电室、工业医疗消声室设计施工。

The fiber are successfully used in the practical noise control. The model of aerodynamics in the course of the intermittence exhaust is simplified into exhaust problem of two stage series cylinder. Digital calculation program which can really imitate aerodynamics characteristics in the exhaust process is established. A simple formula which can be used for calculating the volume of the silencer expansion chamber is established.

作者指出间歇性排气过程的空气动力模型可简化为两级气缸串联的排气问题，编制的数值计算程序真实地模拟了排气过程中的空气动力学特性，建立了消声器膨胀消声室体积大小计算的表达式。

Furthermore, the geometrical ending-profile of an expansion chamber has an influence on both frequency period and amplitude of TL. The appropriate offset of inlet and outlet of an expansion muffler can increase its working frequency range. The findings presented in this paper can be used as a design guideline for a high performance muffler.

结果表明，扩张室为圆形截面的消声器性能优于椭圆形和矩形截面消声器；扩张室端部形状不仅影响消声器传递损失的大小，还影响到传递损失的变化周期；当进出气管之一与扩张室轴线偏离一定距离时，可有效地提高消声器的消声频率，改善消声性能。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。