等效聲級 的英文怎麼說
中文拼音 [děngxiàoshēngjí]
等效聲級
英文
equivalent sound level-
The state - of - art “ zhongwei ” series machines deliver stable performance in varied function with user - friendly operation ; the big output servo system applied assures low - noise, effective production of precise patterns, which are widely used in elegant mattress, cloth, cushion, sleeping bags and other bedclothes
本公司生產的「中威牌」系列電腦絎縫機造型美觀、布局合理、結構新穎、功能齊全、性能可靠、操作簡便易懂、效率高、噪聲低，採用大功率進口伺服系統，產品關鍵配件全部進口，使機器性能穩定、功能更強、精度更高；絎縫出來的花樣精確美觀，廣泛適用於高級床墊、服裝、靠墊、睡袋、床上用品等各種產品。Reference equivalent threshold sound pressure levels for pure tones and supra - aural earphones
壓耳式耳機純音基準等效閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
聲學.校正聽力設備的基準零級.純音和環繞耳機的基準等效閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - part 8 : reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
聲學.校正聽力設備的基準零級.第8部分:純音和環繞耳機的基準等效閾聲壓級Because the north downtown is the old city in municipal area, kits population is intensive and the business in train station, long distance bus station is comparative concentrates. concentrating, the poprlation flows a great deal, so the mission of medical treatment, prevention, health care for this area is heavy. through several generation s effort, the hygiene business of my area from have no to have, go to since the childhood to big, obtained the substantial development, tooctober 1999, my area totally contain 192 all levels vrious medical treatment hygiene organzation, among them the first province class is the sixth people s hospital ; troops hospital is namely 252 hospital ; municipal class hospital 8, namely the first hospital, the first center hospital, the third hospital, north downtiwn hygiene defends the station, the north downtown women and children health care staton ; three countries hosptal namely hanzhuang country hospital, dongjin country hosspital, bailou country hospital ; still there are 56 villages public health offices, 70 individual clinics, 50 business enterprises business unit hygiene room in addition, an a scale as center from the city, regarding village as the key point, under the new form of the socialism economcal market, our hygiene system insists on the material civilization grasp with spiritual civilization together, putting the social efficient in the first, hold " everything regard health as the center, working hard to mold " window image, the municipal fifth hospital is named as baoding civilized committee, baoding hygiene office as the two star class civilized service. my area all hygiene worker will still work hard to create superior quality service ofor the large crowd
經過幾代人的努力，我區的衛生事業從無到有，從小到大，取得了長足的發展，至1999年10月，我區內共有各級各類醫療衛生機構192個，其中省級一家即河北省第六人民醫院軍隊醫院一家即二五二醫院市級醫院8家即保定市第一醫院保定市第一中心醫院保定市第三醫院保定急救中心保定市法醫醫院保定市聲學研究所保定市衛生防疫站區直屬單位三家即保定市第五醫院北市區衛生防疫站北市區婦幼保健站三個鄉醫院即韓莊鄉醫院東金莊鄉醫院百樓鄉醫院;此外還有56個村衛生所70戶個體診所50個企業事業單位衛生室。一個從城市為中心，以農村為重點，集醫療預防保健康復科研和公共衛生監督等多功能多層次並基本滿足社會需求的衛生工作網路初具規模。在大力發展社會主義市場經濟的新形式下，我區衛生系統始終堅持物質文明和精神文明一起抓，始終把社會效益放在第一位，緊緊圍繞「一切以健康為中心，努力塑造」窗口形象，市第五醫院被保定市文明委保定市衛生局命名為文明服務二星級單位。Acoustics - reference equivalent threshold sound pressure levels for pure tones and insert earphones
聲學插入式耳機純音基準等效閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones and insert earphones
聲學.音響設備校正標準參考零點.純音和插入式耳機用參考等效門限聲壓級Acoustics. reference zero for the calibration of audiometric equipment. part 2 : reference equivalent threshold sound pressure levels for pure tones and insert earphones
聲學.純音聽力計設備校正的參考零點.插入式耳機和純音調用參考等效域值聲壓級In this paper the train running noise level has been predicted with the theory of point sound source. the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed. these make it convenient and precise to predict the noise level
本文從點聲源的理論出發，對列車運行噪聲進行預測計算，採用一列車通過時的單發暴露聲級、時間特性的最大聲壓級和一定時間內的等效聲級等作為噪聲評價量，並考慮了噪聲傳播過程中的各種附加衰減，編制了相應的可視化軟體，使噪聲預測計算方便、準確。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 。Come to the road vehicle breakdown, circadian variation and variation week. use of equivalent continuous a levels and the cumulative percentage of the level of traffic noise test evaluation, proportional prediction right sontu street next five years, the traffic noise trend forecast
運用等效連續a聲級及累計百分數聲級對測試的交通噪聲進行評價，採用比例預測法對雄楚大街未來5年交通噪聲的發展趨勢進行預測。Acoustics. reference zero for the calibration of audiometric equipment. reference equivalent threshold force levels for pure tones and bone vibrators
聲學.聽力設備校正的標準零點.第3部分:純音和骨傳導振動器用標準等效閾力級別Acoustics - reference zero for the calibration of audiometric equipment - part 3 : reference equivalent threshold force levels for pure tones and bone vibrators
聲學校準測聽設備的基準零級第3部分:骨振器純音基準等效閾力級Acoustics. reference zero for the calibration of audiometric equipment. part 3 : reference equivalent threshold force levels for pure tones and bone vibrators
聲學.聽力測定儀器的校準用基準0 .第3部分:純音和骨振動器用基準等效聽閾強度級Acoustics - reference zero for the calibration of audiometric equipment - part 1 : reference equivalent threshold sound pressure levels for pure tones and supra - aural earphones
聲學.聽力測定儀器的校準用基準0 .第1部分:純音和超聲耳機用基準等效閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - part 5 : reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 khz to 16 khz
聲學.聽力測定儀器的校準用基準0 .第5部分:頻率范圍為8 khz至16 khz的純音用基準等效聽閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones and supra - aural earphones
聲學.音響設備校正基準零點.純音和超聽覺耳機用基準等效閾值聲壓級Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 khz to 16 khz
聲學.聽力測定設備校準的標準參考零點.頻率范圍為8khz至16khz之間的純音用參考等效閾聲壓級Acoustics - reference zero for the calibration of audiometric equipment - reference equivalent threshold force levels for pure tones and bone vibrators
聲學.音響設備校正參考零點.純音和骨振子用參考等效閾聽力級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。分享友人