逆傳染 的英文怎麼說
中文拼音 [nìzhuànrǎn]
逆傳染
英文
retroinfection-
Protocol of reverse transcription polymerase chain reaction rt - pcr for infectious haematopoietic necrosis virus
傳染性造血器官壞死病毒逆轉錄聚合酶鏈式反應操作規程If the strategy succeeded, a worldwide crisis would be averted ; if it failed, the donor countries would be left with less protection
這個策略一旦成功，可以逆轉全球危機；要是失敗，輸出藥物的國家恐怕也難逃傳染病肆虐的噩運。The continuing spread of the epidemic and the high rate of infected people in that area of the world have raised the need to establish urgent preventive measures and extend antiretroviral therapy access ( haart )
在世界上這些地區，這種傳染病的持續性傳播和人群的高感染率迫切要求建立起緊急預防措施和擴展抗逆轉錄病毒的治療方案（ haart ） 。This paper studies on used the ac servo system based on ti dsp ( lf2407a ) and the foc and digital signal processing thorem, achieves following results : algorithm. we employ svpwm ( space voltage pwm ) algorithm, improve the efficiency of the electric source, and decrease the harmonious elements. we build the mathematic model of the system and simulate it on matlab platform, dsigne segmented pid regulator to adapt variable speed and widen the speed range. measurement. the velocity and electric current measuring, we adopt multi - sampling - rate and digital filter principles. as more improvements we make, the whole system gets a good results. pc control. the complete controlling system can be controlled remotely. so we develop the pc controlling program.
採用磁場定向脈寬調制演算法，提高了電源利用率，降低了逆變電壓的諧波，改善了電機的運行特性，降低了對電網的污染；在matlab平臺上建立了交流永磁同步伺服電機和電壓空間矢量脈寬調制控制系統的數學模型，在模擬的基礎上，對傳統pid調節器進行了改進，提出轉速調節器和電流調節器採用分段pid結構，根據給定轉速所處的區間，自動選擇相應pid調節器的參數，拓寬了調速范圍，提高了控制精度。分享友人