降聲因素 的英文怎麼說
中文拼音 [jiàngshēngyīnsù]
降聲因素
英文
sound reduction factor-
In practical design, not only nonideal factors from noise, mismatch, offset etc. are taken into consideration, but also the desired sub _ adc performance is achieved with reduced power dissipation
在具體電路設計中，不僅充分考慮了噪聲、失調和失配等非理想因素，而且在實現系統對子adc的指標限制前提下，降低了功耗。The submarine noise detected by sonar consists of two parts : propeller - generated hydro - dynamical noise, which can be greatly reduced by improving the submarine rear shape ; radiated noise from the submarine structure excited by the centrifugal forces ( moments ) of rotatory machine, which is more complicated and influenced by many factors
聲納所探測的潛艇噪聲包括兩部分，一是螺旋槳運轉帶來的水動力噪聲，二是潛艇主機工作時產生的不平衡力和力矩引起潛艇結構振動，帶動流場振動從而輻射噪聲。通過改進潛艇尾部線型設計，已將水動力噪聲降到比較低的程度，而結構噪聲則復雜得多，與許多因素有關。Stability and intensity of structure are commonly top - priority in the structure design. when a noise problem has been found in the structure, the common way to decrease vibration is adding damping or vibration isolating because of much restriction in the modification of structure
在常規的結構設計中，設計過程往往優先考慮結構的穩定性和強度及重量等因素，在試驗階段才考慮振動和噪聲問題，此時，結構可改動的餘地一般已經很小，通常只可能通過附加阻尼或者採用隔振手段等來實現減振降噪。The noise were often attached to the real hydrology time series yield by some unknown factors. to reduce the influence of them to the bp networks, the wavelet soft - threshold de - noising method was employed before bp networks began to train
實測的水文數據中常常帶有由於許多未知因素的干擾而產生的噪聲，為減少噪聲對bp神經網路訓練過程的干擾，先用小波軟閾值技術對原始徑流序列進行降噪然後再進行網路訓練。As umbirfpa is a new type of infrared detecting device, its work principle is complex and its performance is affected by many factors. in the initial stage of developing, the design experiment and theoretical understanding are little interiorly. furthermore, the problems such as sensitivity reduced, dynamic range shortened, nonuniformity increased come forth if umbirfpa is not designed properly
Umbirfpa是一種新型的紅外探測器件，微測輻射熱計的工作原理復雜，其性能受到很多因素的影響，目前國內尚處于發展初期，缺少實際的設計經驗和理論認識，同時umbirfpa又是在集成電路工藝線上生產的，投資大、周期長，如果設計不當，不僅可能導致靈敏< wp = 13 >度降低、動態范圍縮小、噪聲增大、非均勻性增大等問題，更可能的是根本就不能用於成像，從而造成很大損失。This paper is aimed to provide a computational method of sound radiation from the pressure and non - pressure hulls of submarines subjected to harmonious point forces. it is significant for reducing vibration and sound radiation of the submarine hull, guiding the optimization design of submarine and enhancing its battle ability
本文尋求潛艇耐壓和非耐壓船體結構受激振動輻射噪聲的計算方法，分析潛艇結構輻射噪聲的影響因素，對降低艇體振動和輻射的噪聲，以及潛艇結構進行隱身優化設計、提高其戰鬥力具有十分重要的理論指導意義。This could help to improve the design of inscribed gear pump to achieve a high efficiency and reduce the noise. in addition, the contact stress of a set of gears was research particularly using ansys / ls - dyna
同時，本文也對影響機油泵容積效率和噪聲的因素進行探討，為提高其效率，降低噪聲，改善工作性能提出改進措施。Besides policy factors, five methods of cost - cutting of biodiesel are reviewed, including new raw material with higher oil content, shorter regeneration cycle, which is suitable for infertile soil and different climatic conditions ; heterogeneous catalysts ; new technologies ( e. g. supercritical methanol and ultrasonics ) ; higher added value utilization of by - product glycerin with simple method ( propylene oxide chloride, 1, 3 - propanediol, pyruvic alcohol etc. ) and moderate scale of production
摘要綜述了除政策因素外，降低生物柴油生產成本的5種方法：選擇含油率高、再生周期短、適應貧瘠土地及不同氣候條件的新型植物原料；研究新型固體催化劑；引入新工藝（超臨界法和超聲波法） ；使用比較簡便的方法將廢棄的甘油轉化為高附加值的產品（環氧氯丙烷、 1 ， 3 -丙二醇、丙酮醇等）以及適度生產規模等。By synthesis analysis, sum up researcher network information resource need : ( 1 ) the degree of depends on library debase, ( 2 ) searching engine has become first channel to obtain specialty information, ( 3 ) database has turned into a tool in common use to inquire about electronic resource. ( 4 ) be short of full - text database is a problem to settle in the library, ( 6 ) quality, feedback and effective link are three important factors, which is evaluated searching system for user. ( 6 ) network reference need developing ulteriorly, ( 7 ) the need of interlibrary loan and document delivery is huge. ? personalized customization of information service exists some questions. ? ducational form of information users should diversification
通過綜合分析，總結出科研人員網路信息資源需求具體表現在：科研人員對圖書館的依賴度降低；搜索引擎成為科研人員獲取專業信息的首選渠道；數據庫成為科研人員查詢電子期刊經常使用的工具；全文數據庫缺乏是圖書館急待解決的一大難題；質量高低、反應速度和有效鏈接是用戶評價檢索系統三個重要因素；網上參考咨詢服務有待進一步拓寬；館際互借服務呼聲很高，但存在的問題不容忽視；實施個性化服務略有爭議，一些方面有待商榷；用戶培訓形式注重多樣化。Sonophotocatalytic degradation of organic pollutants has been studied widely as a new method. in this paper, the degradation mechanism is discussed. the effects and influencing factors of degradation are summarized
摘要聲光催化是水處理降解有機污染物的一種新技術。在分析中，探討了該技術降解有機污染物的機理，以及國內研究現狀，包括降解效果和主要的影響因素。Nevertheless, the widely existed overconstraints in the mechanisms will make the quality of the mechanisms very sensitive to the inevitable manufacturing, assembly errors ( especially, the errors resulted from the shape and position between kinematic pair elements and their axes ). at the same time, because the internal and external uncertain factors such as non - plane characteristic of dynamic parameters of links ( such as mass distribution, inertia forces, etc. ), bending and twist of links, and the changes of environment and operating condition are inevitable, they will form the disturbance to planar constraints and make them possess the characteristic of " uncertain "
但是，平面連桿機構中廣泛存在的過約束，造成機構對製造、安裝誤差特別是運動副元素的形位誤差十分敏感；同時，由於不可避免的內部和外部不確定因素的影響，常常會造成機構運動的「障礙」及系統中某些構件的變形和運動副中的附加動載荷，引起機械的振動、沖擊、噪聲等而導致機械的效率和工作性能的降低。In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased
在蜂窩網路環境中，由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響，使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差，從而使各種定位演算法的性能顯著下降，造成移動臺位置估計出現較大偏差。分享友人