positive negative switch 中文意思是什麼
positive negative switch
解釋
正負切換-
The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation
二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。 -
Ttl high, low, positive or negative, switch closure or software
Ttl高，低，正或負，開關或軟體控制 -
Positive electrode and negative electrode that execute spanning crack prevention are simulated as the source point and merged point, so the temperature field owing to the concentration of current around the crack tip is educed at the moment when the current is switch on
將實施跨越止裂時的正、負電極比擬為電流場中的源和匯，從而導出了在瞬間電流作用下，裂紋尖端附近區域因繞流而形成的溫度場。 -
Remember the following words and expressions : e. g. multimeter ； circuit ， current ； voltage ； resistance ； digital multimeter ； analogue multimeter ； analogue multimeter scales ； zero adjustment control ； zero adjustment control for resistance ranges ； measurement ranges switch ； transistor test socket ； meter probe ； positive terminal ； negative terminal ； anode ； cathode ； red lead ； black lead ； power supply ； connect in parallel ； connect in series
記住萬用表、電路、電流、電壓、電阻、數字萬用表、模擬萬用表、表頭、機械零位調整器、歐姆零位調整器、量程選擇開關、晶體管插孔、表棒、正接線端、負接線端、陽極、陰極、紅導線、黑導線、電源、並聯、串聯等常用英文單詞，並逐步掌握。 -
It is found that the rates can induce gene switch in the positive feedback system, and can regulate the oscillation range in the positive - negative feedback system
結果表明，在正反饋模型中轉錄率能誘導基因開關轉換；在正負反饋模型中轉錄率能調節蛋白質濃度的振蕩幅度。 -
Inspired by the “ needham question ”, this essay argues that, if research. htm focuses switch from the negative question “ why modern science did not happen in china ” to the positive question “ why china was more efficient in applying knowledge about nature to human needs ”, then we can develop social and culturally oriented studies of chinese science
本文從「李約瑟問題」得到啟發，認為如果把注意力從反問題「近代科學為什麼沒有在中國發生」轉移到正問題「為什麼中國文明在把人類對自然界的知識應用於人類實際需要上比西方文明更有效得多」上來，則可以發展社會學與文化取向的中國科學史研究。 -
Inspired by the “ needham question ”, this essay argues that, if research focuses switch from the negative question “ why modern science did not happen in china ” to the positive question “ why china was more efficient in applying knowledge about nature to human needs ”, then we can develop social and culturally oriented studies of chinese science
本文從「李約瑟問題」得到啟發，認為如果把注意力從反問題「近代科學為什麼沒有在中國發生」轉移到正問題「為什麼中國文明在把人類對自然界的知識應用於人類實際需要上比西方文明更有效得多」上來，則可以發展社會學與文化取向的中國科學史研究。
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