s-hf 中文意思是什麼

s-hf 解釋

  • s :
  • hf : Hf ＝ 【化學】 hafnium.
  1. S chemical company, inc. : specialty chemical manufacturer in kentucky, whose main products focus on food contact disinfection, and include chloramine, trichloromelamine, hf - pyridine, and specialty iodides

    衢州中園化工有限公司是生產氯化鈣系列產品，電石系列、乙炔氣、醫藥中間體（二溴丁二酸）的企業。
  2. Hf - current in monopolar electrosurgery flows from an active electrode ( i. e. the instrument ) through the patient ' s body to a neutral electrode, patient plate, applied o his / her body

    在單極高頻外科手術中，高頻電流從活動電極（例如儀器本身）流經病人身體到達中性電極（附著在病人身體的病人板）
  3. We discuss the characteristic of wireless channel and hf " s at the forepart of the paper and, analysis several typical model about hf channel, and consider the math representation and statistic characterization, after that we select watterson hf channel model as the simulated model in this paper

    在論文開始我們討論了無線通信通道的傳播特性和高頻通道的傳播特性，分析了高頻通道的數學表述和統計特性，最後我們選擇了watterson高頻通信模型作為本論文的模擬和模擬模型。
  4. It ' s of good performance not only in the case of hf noise cancellation like the adaptive line enhancement, but also in the case of lf noise cancellation just like the normal adaptive noise cancellation, and in practice it ' s proved to be efficient and robust

    它兼有自適應譜線增強器有效濾除高頻噪聲信號和噪聲對消器有效濾除低頻噪聲信號的特性，經模擬和實例表明，具有很強的噪聲濾除能力和魯棒性。
  5. Take integrity of object information into condition, a two - dimension signal processing method which can make a measurement of the target ’ s speed as well as the range is brought forward at the basis of waveform parameter design. and simulation in the background of hf multi - object with noise is taken. a comparison of signal properties, processing and antinoise detection performance is taken between mcpc and another two high range resolution radar signals : single carrier pulse coded signal and step frequency pulse coded signal

    考慮到目標信息提取的相對完整性，以高頻雷達為背景，在對多載波相位編碼脈沖串信號參數設計的基礎上，推導了三種多載頻相位編碼脈沖串信號的距離速度二維處理過程並相應的對多目標噪聲環境進行了模擬;將多載波相位編碼信號與另外兩種距離高分辨信號:單載頻相位編碼信號和相位編碼階梯跳頻信號，在信號特性、處理過程和抗噪聲特性方面進行了對比;本文從理論上為多載波相位編碼信號的波形設計和分析、信號的處理打下基礎。
  6. It introduces the phase noise measurement method of hf radar ' s transmitting signal, especially the measurement method of low phase noise which is close - in to carrier frequency

    指出了在高頻雷達發射信號相位噪聲的測量，特別是近載頻低相位噪聲的測量。
  7. By the line s - h sensor mentioned in chapter 3, measurements have been made to a beam path heated by hf laser. by a high speed interferometer, tomographic measurement was made on a air column heated by electric powered wire

    用第三章設計的線陣s - h傳感器對hf激光加熱光路進行了測量研究，在此基礎上，用高速干涉儀對電熱絲加熱的空氣柱進行了模擬層析測量研究。
  8. Bst - ant - s series hf long range antenna can read or write the iso iec15693 rfid tag matching with the hf long range device. its range can up to 65cm

    Bst - ant - s系列高頻遠距離天線，可配合高頻遠距離讀寫設備對符合iso iec15693標準的電子標簽進行數據的讀寫操作，讀卡距離可達65cm 。
  9. The author ' s main work lies on the implementation of baseband procedure hardware according to the military standard. this paper emphasizes in the estimation of lqa ( link quality analysis ) parameters during ale, and specify synchronization method during ale. finally the paper narrate the design scheme and implementation method of hf radio station

    作者的主要研究工作集中在按照軍標的規定實現了ale系統基帶處理部分的硬體設計，本文著重分析了在自動鏈路建立過程中lqa （ linkqualityanalysis ）參數的估算問題，並研究了自動鏈路建立時的同步方法，最後闡明短波無線電臺實驗系統設計方案與實現方法。
  10. Therefore, this study seeks to give hf company some recommendations on how to establish a performance management system. based on hf company ’ s overall strategy and the theories of performance management, this study has generated a suitable method to establish the company ’ s performance management system, which is combined by different performance management instruments, such as balance scorecard and kpi. this report has been divided into five chapters in order to provide

    第四章重點探討hf公司新績效管理體系的設計過程，包括設計績效管理體系時應考慮的五個關鍵點（設計前的準備工作、評價指標體系的建立、考核周期的設計、評價主體的選擇，以及評價方法的選擇） ，新績效管理體系的四個重要環節（績效計劃、績效監控、績效考核、績效反饋） ，以及績效結果的運用。
  11. Mtcem ( multi - tone envelope method ) can accurately forecast performance parameters on a set of stored channel and directly decide usable frequency choice. as hf channel characteristic is closed to gauss, mtcem may be simplified to multi - tone envelope method rtce system. for certain user ' s request and link status, double tone complex envelope method rtce, double tone envelope rtce, adaptive hf channel sounding and communication system, all that can easily derived from mtcem

    多音復包絡實時選頻系統，當通道特性近似於高斯通道時，整個系統可以簡化為多音包絡法實時選頻系統，針對不同的用戶要求和電路通道狀況，很容易由它派生出較為簡單的系統，如雙音復包絡法實時選頻系統，雙音包絡法實時選頻系統，短波自適應通道探測和通信系統。
  12. At the same time, as more and more radio sources have been set up, electromagnetic pollution in urban area becomes more serious, which is harmful to people ' s healthy and communication system so it is necessary to simulate the electromagnetic propagation in urban area by computer being an approximate hf method in evaluating em scattering ， the complex ray method （ crm ） is valuable in actual applications ， mainly benefited from its simple physical model ， convenient mathematical formulation and computational efficiency, especially with the scenes of scattering from complex objects based on the condition mentioned above, a hybrid ray model of the urban area electromagnetic wave propagation prediction was established with the foundation of ray tracing theory and complex ray theory

    復射線技術作為一種求解波場問題的高頻近似方法，由於其具有物理模型簡單、數學處理方便、計算效率高等優點，在復雜的目標散射特性分析等應用領域中有著重要的應用價值。基於以上的情況，本文在射線追蹤理論和復射線理論的基礎上，為城區環境建立了混合射線預測模型。本文採用橢圓模型對已有的射線追蹤方法進行加速，並將復射線理論應用到城區環境電波傳播預測中，提出新的預測方法混合射線方法。
  13. Upm raflatac ' s rfid business area specializes in the cost - effective high - volume production of hf and uhf tags and inlays

    芬歐藍泰在rfid標簽及嵌入式電子標簽的開發和生產方面主要專注于成本效率高的，大批量的高頻和超高頻電子標簽及嵌入式電子標簽的生產。
  14. This task uses the ds - ss technology, and researchs the important technologies, such as synchronization of ds - ss, rake receive, narrow - band interference suppression, etc. these technology are useful for the voice - band channel of hf. i designed one system of very low bit rate for hf data communication, and completed the softwave module design of the system. i get the result of system ' s simulator, it ' s useful for the system realization

    根據短波音頻帶寬通道的特點，重點對系統的擴頻同步技術、 rake接收技術和窄帶抗干擾技術進行了專題的研究。並根據自己多年的科研經驗，設計了一種具有實際意義的短波最低限度通信系統，並對實際的軟體實現進行了模塊化的設計。
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