噪音等級 的英文怎麼說

中文拼音 [zàoyīnděngjí]
噪音等級 英文
noise level
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 音 : 名詞1. （聲音） sound 2. （消息） news; tidings 3. [物理學] （音質） tone 4. （姓氏） a surname
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  • 級 : Ⅰ名詞1 （等級） level; rank; grade 2 （年級） any of the yearly divisions of a school course; gra...
  • 噪音 : noise; undesired sound; strepitus
  • 等級 : 1 （按質量、程度、地位等的差異而作出的區別） grade; rank 2 （在社會地位和法律地位上不平等的社會集...
  1. The press is ingenious in design, hign quality in materials, with features as fine workmanship, handsome appearance, compact structure, higher work pressure, lower work noise, and equipped with single skip. controlled temperature, electric autotimer, so that it will be reliable is operation and easy to repair

    本機設計精巧，用材講究、製造精良、造型美觀、結構緊湊，傳動部分採用大功率雙向電磁離合器，可連續工作，也可單獨工作，且有壓力大、噪音小、單級跳位、溫度自控、電子式時間繼電器延時，操作安全可靠、維護保養方便等優點。
  2. The fixed quantity guideline of the timbre is given by testing the empty yard reverberation time and calculating the full yard reverberation time of the odeum in the xiaogan college

    本文通過對孝感學院音樂演播廳混響時間、聲壓級分佈及背景噪聲等客觀質量的測試，給出了定量的音質評價。
  3. Product : tachometer 、 stroboscope 、 surface speed mter 、 anemometer 、 sound level meter 、 moisture meter 、 grain moisture meter 、 thickness meter 、 coating thickness meter 、 humidity meter 、 dew point meter 、 temp. meter 、 lux meter ect

    主要產品：主要產品：轉速表、風速表、聲級計、 （噪音計） 、水份儀（水分儀） 、溫濕表、露點儀、測厚儀、塗層測厚儀、溫度表、照度表、頻閃轉表等。
  4. The lg series pump is single - suction multi - stage segmental vertical centrifugal pump for use in handling water supply and drainage in high rising buildings, industrial, mining and municipal applications, make - up water in chemical plant, water circulation in low - pressure boiler

    本系列泵是立式、單吸、多級分段式離心泵，具有結構緊湊、噪音低、佔地面積小、重量輕等優點，主要用於高層建築的生活供水，工礦企業、市政工程給排水，化工流程補給水，以及低壓鍋爐循環用水等場合。
  5. This paper gives a brief introduction of the formation mechanism of sma and the handing property of pavement from the aspects of theory and research. at the same time, this paper also studies the effect of aggregate size on road - related performance in some different grads. except, it also having inspected to use the sbs, the pe and the combination material of sbs and pe to analyze the influence to the function of material road

    瀝青瑪蹄脂碎石混合料（ sma ）以其溫度穩定性好、抗滑性能優良、低噪音、使用耐久等優點在公路建設中越來越受到重視，本文對sma組成特點，強度形成機理與路面使用性能從理論和試驗研究角度進行論述，並針對不同級配的瀝青瑪蹄脂碎石混合料，分析了粗、細集料的粒徑變化對其路用性能的影響，同時也考察了用sbs 、 pe 、 sbs和pe復合改性后的瀝青結合料對混合料的路用性能影響。
  6. Air conditioners, heat pumps and dehumidifiers with electrically driven compressors. measurement of airborne noise. determination of the sound power level

    帶電動壓縮機的空調器熱力泵和除濕器.機載噪音的測量.噪音等級的測定
  7. Product info : the vibrating screen with circular motion is specially designed for quarry to separate crushed stone material into different sizes, and is dressing, cibstruction matefial, elecric and chenueal industies. it has a feature of advanced structure, powerful vibrating forces, low vibration noise, easy maintenance, high durability and etc

    上海林滬實業有限公司專為採石場篩分料石設計生產的「山友」牌系列振動篩，運動軌跡呈圓周，也可用於選煤選礦建材電力及化工部門等作產品分級用，本公司產品具有結構先進激振力強振動噪音小易於維修堅固耐用等特點。
  8. We got a new model centrifugal fan by the mathematics optimum design, experiment optimum design, lots of mathematics calculation and regress calculation in the paper. the efficiency of this new fan is increased 6. 44 % and the noise is reduced 4. 78db than that of the original fan

    本文通過數學優化和試驗優化相結合的方法，並對實例經過大量的數學計算、試驗及回歸計算等得到了一種新型離心式通風機，該通風機比它的原型機（ 4 - 72no . 4a ）效率提高了6 . 44 ，比a聲級噪音降低了4 . 78db 。
  9. The first part of the paper is designing the testing project for grounding resistance and insulation resistance in a new way. using 16bits ad converter with programmable control amplifier replaced the way which used changing resistance to change measure range. lt is not only improved testing precision and develop the system expediently, but also reduced the area of the circuit boardwith the new way. in order to make the electric implement safety testing system have upstanding expansibility, the software and hardware of the system adopted the modularization design. adopted mcu atmegal28 as a master mcu which control mmi, realtime clock and communication with slaver mcu. atemga8 as the slaver mcu to realize testing function. so it is easy to add or reduce the testing project. the testing implement system has been developed successfully, and the comments for the system is that it has high precision, high expansibility and easy maintain. but considering the electric implement system should have intelligence and humanity abi lity. so this paper bring forward a scheme of electric equipment safety testing embedded system with speech control. after introduce the basic theory of speech recognition, the paper expatiate the characters of this system. the system is a noise conditon, not special people, small glossary, insulation word system. with these characters design the speech recognition as fellow. utilizing cross zero ratio and short energy to ensure jumping - off point and end point ; adopting mfcc as the character parameters of speech recognition ; the character parameters than be recognized by dtw. in order to ensure the credibility of this project, first realized by matlab in computer

    在介紹了語音識別的基本原理后，闡述了本系統的特點：本系統是一個噪聲環境下非特定人、小詞匯量、孤立詞的語音識別系統。根據本系統的這些特點設計了如下語音識別方案：利用過零率和短時能量相結合的方式確定語音端點；採用mel頻率倒譜系數（ mfcc ）作為語音識別的特徵參數；得到的特徵參數最後通過動態時間規整（ dtw ）的模式識別方法進行識別。為了確保本系統實現方案的可靠性，首先通過計算機利用matlab軟體來模擬，在演算法模擬實現后又進一步增加環境的復雜性：加上較大的環境噪聲、突發性的噪聲等，再通過修改參數、修改參考模板、兩級識別等各種提高語音識別精度的方法來提廣東工業大學工學碩士學位論文高識別率。
  10. Larger loading capacity under the same specification ; easily establishing lubricant oil film, smaller friction coefficient, higher transmission efficiency, saving energy ; highest accuracy up to grade 3 of din standard ; smoother functioning, lower noisiness and longer service life

    平麵包絡環面蝸桿與普通圓柱蝸桿傳動相比具有更大的承載能力，易於建立動壓油膜摩擦系數小，傳動效率高節省能源具有可磨削性，能達到din標準三級，面粗糙度優于ra0 . 4而且具有運行平穩噪音低壽命長等優點。
  11. Our company is one of the largest distributors of america marley cooling tower co., ltd. in china district, specially in factories, office buildings, chemical industry and power station

    上海神風製冷設備有限公司廣州辦事處，馬利冷卻塔一級經銷商，專業經銷冷卻塔.其換熱效率高，漂水少，噪音低，運行穩定等卓越性能不僅全面符合國家標準，也得到用戶的一致認可和支持。
  12. The prototype test results indicate : voltage mode and current mode ac - ac mode ac / ac converters with high frequency link have the advantages such as high frequency electrical isolation. simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, no audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type regulated sinusoidal ac power supply, electronic transformer, ac regulator, and wave converter etc

    試驗表明，這類變換器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac hfac lfac ） 、功率密度高、雙向功率流、無音頻噪音、變換效率高、網側功率因數高等優點。為新一代正弦交流穩壓器、電子變壓器、交流調壓器、同頻波形變換器的實現奠定了關鍵技術基礎。
  13. It can be operate for the sorting purpose either in single sieve or multi - sieves with a compact structure, seay operating and repairing, smooth running, low noise, large materials - treating, good fineness, and wide applicability etc

    本機可用於單層或多層分級使用，具有結構緊湊、操作維修方便、運轉平穩、噪音低、處理物料量大、細度小、適用性強等優點。
  14. Refrigerating machine. noise emitted by refrigeration equipments with compressors drived by external power unit called " open ". test code for measuring the sound power

    冷凍機.由被稱為"敞開式"外部電源驅動的冷凍設備發出的噪音.測定聲音等級的檢測規程
  15. This kind of converter has the advantages such as high frequency electrical isolation, simple topology, two - stage power conversion ( lfac / hfac / lfac ), high power den sity, bi - directional power flow, soft commutation of output cycloconverter, uni - polarity spwm waveform, no audio noise etc. the correction and advance of the new concept of the 220v + 10 % ( 50hz ) / 220v ( 50hz ) uni - polarity phase - shifted controlled voltage mode ac / ac converter with high frequency

    這類變換器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac hfac lfac ） 、功率密度高、雙向功率流、輸出周波變換器實現了zvs換流、單極性spwm波、無音頻噪音等優點。
  16. Close to a million people at home suffer road traffic noise higher than 70 db ( a ) l10 ( l hr ), which is the minimum acceptable standard in the hong kong planning standards and guidelines

    香港規劃標準與準則訂明的最低可接受道路噪音標準，是每小時有一成時間的等效連續聲級為70分貝（ a ） ，然而，香港有接近100萬人在家裡要忍受超逾這標準的道路噪音。
  17. Its test results indicate : voltage mode inverters with high frequency link have the advantages such as high frequency electrical isolation, simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, low audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type high power density, high efficiency and low cost asi

    設計的1kva270v 10 % dc / 115v400hzac單極性移相控制雙向電壓源高頻環節逆變器原理試驗表明，這類逆變器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac / hfac / lfac ） 、功率密度高、雙向功率流、音頻噪音低、變換效率高、網側功率因數高等優點，為新一代高功率密度、高變換效率、低成本航空靜止變流器奠定了關鍵技術基礎。
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