sound power level 中文意思是什麼
sound power level
解釋
聲功率級-
Reverberant room method for sound power level testing of ventilators
空調風機噪聲聲功率級測定?混響室法 -
Wind turbines - declaration of apparent sound power level and tonality values
風輪機.表面聲功率級和音調值聲明 -
Wind turbines - part 14 : declaration of apparent sound power level and tonality values
風輪機.第14部分:表面聲功率級和音調值聲明 -
Electrically propelled road vehicles - airborne acoustical noise of vehicle during charging with on - board chargers - determination of sound power level
電動道路車輛.車輛荷載運行期間產生的噪聲.聲級測定 -
Standard test method for determining a - weighted sound power level of vacuum cleaners
測定真空吸塵器a -加重聲音功率級的標準試驗方法 -
Here a number of factors must be taken into consideration, such as the environmental standard of the area where the engine room is located, the fender structure of the engine room as well as the engine type, power level and the cooling air volume, etc. the core of the overall control is the concept of " equal sound insulation ", which means to apply a closed fender structure to isolate the engine unit from outside parts so as to cut the outward sound radiation
經過多年來與環保部門的合作，對油機房進行消噪聲處理，積累了一些治理經驗，主要是必須根據具體的機房項目來確定相應的控制方案，這其中應考慮機房所在區域的環境標準，機房圍護結構形式及油機機型、功率、冷卻風量等因素。綜合控制的核心是等隔聲概念，即用一封閉的圍護結構將機組與外界隔離開來，減少聲源對外的聲輻射。 -
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 -
Air conditioners, heat pumps and dehumidifiers with electrically driven compressors - measurement of airborne noise - determination of the sound power level
帶電驅動壓縮機的空調加熱泵和除濕器.空氣噪聲的測量.聲功率水平的測定 -
Air conditioners, heat pumps and dehumidifiers with electrically driven compressors - measurement of airborne noise - determination of the sound power level ; german version env 12102 : 1996
空調器熱力泵和帶電動壓縮機的除濕器.載氣噪聲測量 -
Abstract : on the basis of the analysis about noise sources of the air compressor, it shows that air dynamic noise is primary one. according to the theory of fluid mechanics, the mathematics model of the air compreesor air dynamic noise is found, which shows the relationship between the sound power level and other parameters. the knowing noise of the air compressor " s air dynamic is of low frequencies. the reliable data is provided for the noise and vibration control
文摘:通過對空壓機噪聲源的分析，確認空壓機噪聲源中的空氣動力性噪聲為最強；由流體流場的聲學理論，建立空壓機動力性噪聲源的力學模型，它表明聲功率與其它參數的關系；並知空壓機的空氣動力性噪聲呈低頻特性，這為噪聲及振動控制提供了可靠的依據 -
Determination of sound power level for noise emitted by leather machinery
皮革機械噪聲聲功率級的測定 -
Acoustics. noise emitted by machinery and equipment. determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
聲學.機械裝置及設備噪聲.工作地點和其它試驗場所按聲功率級測量聲壓級 -
Acoustics - noise emitted by machinery and equipment - determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
聲學.機械裝置及設備發出的噪聲.在工作地點和其它試驗場所從聲功率級測量聲壓級 -
Limits of sound power level for noise emitted by air compressors for power source use and diaphragm compressors
動力用空氣壓縮機和隔膜壓縮機噪聲聲功率級限值 -
Road vehicles. determination of sound power level for refrigeration units fitted to thermal goods transport vehicles. expertise class
道路車輛.絕熱食品運輸車輛配備的製冷設備噪聲級的測定.專業級 -
Test method for determining sound power level of vacuum cleaners
真空吸塵器噪聲能量等級測定方法 -
Determination of sound power level for noise emitted by gear units
齒輪裝置噪聲聲功率級測定方法 -
Determination of sound power level for noise emitted by wood working machinery
木工機床噪聲聲功率級的測定 -
Sound power and power level
聲功率與聲功率級 -
If an item of qpme operated under a cnp is suspected to be emitting excessive noise due to poor performance, modification or alternation, the cnp holder would be asked to conduct noise measurement to verify its sound power level
已取得建築噪音許可證的某項優質機動設備，如懷疑因表現欠佳機件改裝或改動而發出過量噪音，建築噪音許可證持有人便需量度噪音以核實其聲功率級。
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