超聲振蕩 的英文怎麼說
中文拼音 [chāoshēngzhèndàng]
超聲振蕩
英文
sonic oscillation-
Sonic oscillator provides a very efficient means of breaking cells or organelles.
超聲振蕩器為破碎細胞或細胞器提供一種很有效的手段。Analysis and tests show that by using slope compensation, the open - loop instability, sub - harmonic oscillation, non - ideal closed - loop response and noise etc. when duly cycle above 50 %, can be reduced or eliminated
理論分析與試驗表明，通過引入斜坡補償可以抑制或消除占空比超過5 %時的開環不穩定性、次諧波振蕩傾向、不理想的閉環響應、噪聲等。Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer
本論文研究無線局域網收發機射頻前端的cmos實現，該收發機採用超外差式的拓撲結構，其射頻前端主要由低噪聲放大器、下變頻器、上變頻器、末前級、本地振蕩信號緩沖器和鎖相環型頻率合成器等模塊組成。Selecting the optimal proportion between hf and hno3, we find the better etching basing on 1min, ultrasonic vibration, 25, appending br2 and pits are more uniform on the multicrystalline silicon surface, while better textured surface can be obtained
實驗研究發現：通過超聲振蕩，在單位面積上腐蝕坑密度較大。在1min 、 hf ： hno _ 3 = 12 ： 1的腐蝕條件下， 25時加br _ 2用超聲振蕩的方式得到的腐蝕效果好。At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db
本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。The experiment results denoted that ultrasonic surge has no positive effect to the stability of nanoscale m - zro2, which perhaps is related to the insuited technology
實驗結果表明，超聲振蕩對納米m - zro _ 2的穩定性沒有積極效果，這可能與超聲振蕩工藝選擇不當有關。The reason of the dispersion and reunite of the carbon nanotubes in the pure water after ultrasonic oscillator is analyzed by using the fluctuation principle and the theory of the dispersion and reunite of the particulate
再利用漲落原理和微粒分散與團聚理論，分析了超聲振蕩后水中碳納米管分散與團聚的原因。分享友人