noise radiation 中文意思是什麼
noise radiation
解釋
噪聲輻射-
Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box
綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。 -
Mechanics on noise reduction of the structure is as followed : there is a very thin air layers between the matrix, so the structure of multi - layer is formed. that is metal a - air - metal b - air - metal a or metal a - air - metal b - air - metal b - air - metal a. on the cutting motivation conditions, air layer between two metal layers is flowed to - and - fro, which can absorb a part of motivation energy, so it leads to low noise radiation
該結構設計的消音機理為：層與層之間存在一層非常薄的空氣層，形成不同金屬與空氣的多層結構，即a金屬-空氣- b金屬-空氣- a金屬或a金屬-空氣- b金屬-空氣- b金屬-空氣- a金屬等多層結構。 -
In chapter 2, a simplified analytical model is presented for the analysis of the bvi mechanism, adopting the beddoes " prescribed wake model. by this model, the azimuthal location and miss - distance of the bvi and the radiation directivity of the bvi noise are calculated and discussed, and some conclusions are obtained
在第二章，使用beddoes預定尾跡模型，建立了一個用於旋翼槳-渦干擾特性機理分析的簡化數學模型，分別對旋翼槳-渦干擾位置、槳-渦干擾距離和聲輻射方向性等進行了計算和分析，得出了有意義的結果。 -
As the microbolometer which is voltage biased express some characters different from other infrared detectors under the effect of electric heat and infrared radiation together, the computing method of parameters, such as responsivity, noise, noise equivalent temperature different ( netd ), noise equivalent power ( nep ), optical gain, detectivity and so on is given in this paper. some of these parameters are particular compared with other detectors, and some have difference between microbolometer and other detectors
由於微測輻射熱計在施加偏置電壓的情況下，電熱效應與紅外輻射的共同作用使它表現出與其他紅外探測器完全不同的一些特徵，文中給出了響應率、噪聲、噪聲等效功率、噪聲等效溫差、光學增益、探測率等參數的計算方法，這些參數中的部分是微測輻射熱計獨有的，或者與其他的紅外探測器的同一參數有所區別。 -
Based on the analysis and study of the primary principle and countermeasure process of the underwater acoustic countermeasure equipments, the mathematical models of the typical underwater acoustic countermeasure equipments such as the wide - band noise jammer target radiation noise simulator echo simulator and the gas bubble are presented
在詳細分析、研究水聲對抗器材有關基本概念、基本工作原理及對抗過程的基礎上，歸納、總結了噪聲干擾器、目標輻射噪聲模擬器、主動回波模擬器及氣幕彈等當前典型水聲對抗器材的數學模型。 -
The use of interferometer to detect and analyze laser radiation is well known, but when the intense ratio of the laser radiation to the background natural light radiation is too small, the laser radiation cannot be detected. a novel more sensitive method for detect of wideband weak incident laser in strong background noise is introduced in this paper. the optical unit uses two wedge interferometers and two line array detectors. the incoming light radiation is divided into two beams and through the interferometers
在被動激光偵察告警中，對微弱脈沖激光信號的探測是一個難點。當探測距離相當遠或視場內接收的背景光輻射很強時，脈沖激光信號到達探測器的能量很小，會淹沒在強大的背景光信號中而探測不到。本論文提出了一種探測微弱脈沖激光信號的方法，可對強烈背景光中的激光威脅信號進行探測和告警，並給出其波長參數。 -
Low radiation noise based on its toroidal construction.
環形結構輻射噪音低 -
Abstract : by drilling holes on the surface, adding damping and isolating vibration to the roller, the vibration and noise radiation are not onl y reduced, but vibration energy of transmission to the surrounding objects is al s o restrained
文摘:通過對輥筒進行表面處理、附加阻尼裝置和採用隔振措施，不但減少了輥筒的振動和噪聲而且抑制了輥筒振動能量向支架、地基傳遞，避免二次結構聲。 -
In light of the generation mechanism, the surface radiation noise can be further divided into the combustion noise and the mechanical noise
按照產生的機理，柴油機表面輻射噪聲又可以分為燃燒噪聲和機械噪聲。 -
( 5 ) the near field and radiation field of flow noise are analyzed, and the noise reducing features of riblets are deduced
（ 5 ）在分析流噪聲的近、遠場特性的基礎上，進一步研究條紋表面的降噪特性。 -
The flow - noise in seawater pipeline has more influence on working environment and warship personnel health, and radiation noise from the pipeline exits also seriously effects on the hiding ability of warships
海水管路系統的流噪聲對工作環境及艦船人員身體健康有較大的影響，並且通過管口向艇外輻射噪聲，嚴重地影響艦船的隱蔽性。 -
The control over the surface radiation noise ( combustion noise and mechanic noise ) is restricted by factors like the engine performance. technically such a control is quite difficult to manage and the noise reduction effect is not so encouraging
發動機表面輻射噪聲（燃燒噪聲和機械噪聲）的控制要受到發動機性能方面的種種限制，從技術角度講難度很大，且降噪量有限。 -
Mainly responsible for supervising and inspecting the carrying out and implementation of national or local environmental protection policy, rule of laws and regulations and standard, make and organize implementation of the environmental protection plans of the whole city, responsible for the protection of water body, atmosphere, soil environment in the whole city, supervise and manage the prevention and control of pollution such as wasted water, liquid waste, offal noise, vibration, poisonous chemicals and electromagnetic wave radiation, responsible for supervising the law - enforcing work in environment
主要負責監督檢查國家和地方環境保護方針、政策、法律、法規規章及標準的貫徹實施，制定並組織實施全市環境保護規劃、計劃、負責全市水體、大氣、土壤環境的保護，監督管理廢水、固廢廢棄物噪聲、振動、有毒化學品以及電磁波輻射等污染的防治工作，負責環境監督執法工作。 -
In order to control sound radiation from a baffle in sonar equipment excited by vibration and noise from a ship, the baffle was modeled as a simply supported rectangular thin plate and its radiation characteristics were analytically investigated
摘要為抑制聲吶設備中障板受艦船振動、噪聲激勵而產生的聲輻射，將障板轉化成簡支薄板模型，分析其在諧波激勵下的聲輻射。 -
An underwater sound intensity measurement system and its application to radiation noise measurement of underwater structure in the near - field
水下聲強測量分析系統及其在近場測量中的應用 -
The results show that the main noise source is the fuel cell auxiliary system while roof panel and rear quarter panel are the key parts contributing to noise radiation
其總布置和噪聲源有別于傳統汽車，為了提高乘坐舒適性，很有必要研究其振動噪聲特性。 -
The dgeu noise is made up of multiple sound sources. in light of the noise radiation mode, it can be classified into the aerodynamic noise and the surface radiation noise
柴油機噪聲是一個由多種聲源構成的復雜聲源，按照噪聲輻射方式，柴油機噪聲可以分為空氣動力噪聲和表面輻射噪聲。 -
On the basis of the theory of vehicle - track coupling dynamics and noise radiation and propagation, mechanism of wheel / rail noise is analyzed
根據車輛軌道耦合動力學理論及聲輻射與傳播理論，分析了列車運行過程中產生輪軌噪聲的機理。 -
Secondly, research development of noise control is analyzed and theory research of noise radiation, noise measurement and noise resource diagnosis, cae, research of numerical value and visual analysis, noise active control are described in this paper
接著，分析噪聲控制工程的研究進展，提出噪聲輻射理論研究，噪聲測試與聲源診斷， cae 、數值化與可視化研究，噪聲的主動控制技術。 -
The research of this paper starts from mechanical vibration, then goes deep into the noise radiation caused by vibration and calculates the relevant acoustic and pressure field. the purpose of this research lies in the virtual reality of the mechanical vibration and noise based on the above acoustic and pressure field
本文的研究目的在於，從對機械結構的振動的研究開始，深入到對由振動引起的噪聲輻射的研究，計算得到相應的聲壓場，並據此實現對機械振動噪聲的虛擬再現。
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