power level of source 中文意思是什麼
power level of source
解釋
電源功率級-
The technical measures for deep reducing coal moisture were urgent needed due to china devoting major effort to implement the new and high technologies used for coal liquefaction and preparation high purity coal. through the analyses of current situation of technical level for coal drying and dewatering, the paper suggests to take overheat steam produced from power plant as a heat source, use the disk dryer to deeply reduce coal moisture with simple working process and low production cost
本文針對我國人力實施煤炭液化和超純煤制備等高新技術，迫切需要將煤中水分深度脫除的技術手段，通過對我國煤炭乾燥脫水技術現狀與水平的分析，提出以電廠過熱蒸汽為熱源，利用盤式乾燥機，以簡捷的乾燥工藝、低的乾燥成本，深度脫除煤中所含水分的技術方案。 -
The lightning resisting level of microelectronic device, the property of tvs diode and solid - state discharge triode, three grades protection for power source device, grounding and shield requirement for communication system to protect lightning and the lightning troubles in recent years at hubei electric power company were introduced
摘要介紹了微電子器件耐雷水平、新型防雷器件tvs管和固態放電管的特性、電源裝置的三級保護、通信系統防雷接地與屏蔽的有關要求和湖北省電力公司通信系統中近幾年雷害情況。 -
One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system
第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。 -
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 -
With the appearance of the new materials and the development of the new technology and process, welding power source is required with higher level
隨著新材料的出現，新工藝，新技術的不斷發展，對焊接電源技術便提出了越來越高的要求。
分享友人