positive resistance 中文意思是什麼

positive resistance 解釋
正電阻
  • positive : adj 1 確實的，明確的；確定的；無條件的 （opp qualified implied inferential）; 絕對的，無疑問的，...
  • resistance : n. 1. 抵抗，反抗，抗拒，抵禦；敵對，抵抗力，反抗力，阻力，【生物學】抗病性。2. 【電學】電阻；阻抗；電阻器。
  1. Taking the silicon diode as an example, through an analysis of the diode ' s current - voltage characters and the avometer circuit, the writer finds out the reasons for the differences in the amount when measuring the positive direct current equivalent resistance with different ohm grades

    摘要以硅二極體為例，從二極體的伏安特性及萬用表內部電路的角度，分析了用指針式萬用表的不同歐姆檔位測量二極體的正向直流等效電阻時，其值緣何不同。
  2. This product is the newest filming technique, the latest achievement of usa electronic magic, it utilizes decomposition principle of electronic material to form a positive negative ions film on the surface of car coating, which has high water repellency and makes the surface of coat has more than 95 % brightness of mirror surface, lt has preeminent performance on weathering resistance, ageing resistance, oxidation resistance static resistance and wear resistance, with the force of charged ions, this product can easy removes the dirt, water drop acid rain and grease on the surface of the film and perennially and effectively protect coat surface, lt is the fourth generation car beauty and protective product which replaces glaze sealing products

    本品屬于當今最新的鍍膜技術，屬美國電子工學魔法的最新成果，它利用電子物質的分解原理，在車漆表面生成持有高撥水性的正負離子覆膜，使漆面光亮度可達鏡面光澤的95 %以上，並具有超強的耐候性、抗老化、防氧化、防靜電、耐磨性極好的功能，它利用電離子的力量，可輕松彈去覆膜表面的污垢、水滴、酸雨、油脂等，平時只需清水沖洗，便可立即使之恢復離子效應，達到長期保護漆面的目的，是取代封釉的第四代汽車美容保護產品。
  3. When the resistant leaves budded, we select the teneral leaves for staining examination. 79. 5 % of 195 resistance germinations are tested positive. 3

    待抗性葉片分化出芽時，取幼嫩的葉片進行gus染色檢測，在195株抗性芽中，有79 . 5的抗性芽gus呈陽性。
  4. The materials as explant in transformation come from birch leaf, stem segment and leaf stalk, and the spider toxin gene was used as foreign gene for this transformation experiment. it showed that the best explant was the big leaf, on which the transformation frequency was 22 %. by gus detection, there were 43 percent of the plants with kanamycin resistance, and 100 percent of positive result, by pcr amplification, was gotten from random sampling

    利用雙元載體的根癌農桿菌lba4404菌株（ agrobacteriumtumefaciens ） ，含質粒pyhy （目的基因及npt 、 gus基因） ，對白樺試管苗莖段，葉柄，葉片三種外植體進行侵染，結果表明：大葉片生長勢強，為轉基因的最優外植體，轉化率能夠達到22 。
  5. The mine lies in the band of positive magnetism abnormity, gravitation abnormity, steepness of mohole and ni ~ co geochemistry abnormity. it has geophysical features ; those are great gravity, great magnetic force, great polarization and low resistance

    含礦巖體位於正磁異常帶、重力高異常、莫霍面的陡度帶和ni - co地球化學異常帶上，並顯示重力高、磁力高、極化率高和電阻率低「三高一低」的地球物理特徵。
  6. Abstract : a 16 - channel temperature detection apparatus with platinic resistance is presented. the method of the down - lead elimination of the platinic resistance and nonlinear correction with positive feedback are discussed

    文摘:介紹了一種經濟實用的16通道鉑熱電阻測溫巡檢顯示儀，並論述了鉑熱電阻的引線消除和用正反饋實現非線性校正的方法。
  7. Mdr1 express product p - glycoprotein was detected by immunocytochemical method and flowcytometry. the cytotoxicity and multidrug resistance reversion effect of tea polyphenol was examined by mtt assay in mcf - 7 and mcf - 7 adr carcinoma cell lines, and compared with pgp inhibitor quinidine. the pgp expression of mcf - 7 adr was strongly positive, the positive rate was 15 % ; the pgp expression of mcf - 7 was negative, the positive rate was 1. 8 %. ic50 of tea polyphenol to mcf - 7 and mcf - 7 adr is 115. 2g ml and 207. 6g ml respectively. ic50 of quinidine to mcf - 7 and mcf - 7 adr is 129. 8mol l 42. 1g ml and 94. 1mol l 30. 5g ml respectively. tea polyphenol and quinidine changed little toxicity of adriamycin to mcf - 7, but tea polyphenol and quinidine improved the sensitivity of mcf - 7adr to adriamycin significantly. immunocytochemistry and flow cytometry can detect p - glycoprotein expression level qualitatively and quantitatively. tea polyphenol is not only an anti - tumor agent, but also a multidrug resistant modulator similar as quinidine. tea polyphenol is advantageous for its little toxicity in tumor treatment

    用免疫組化法和流式細胞儀對腫瘤細胞系mcf - 7和mcf - 7 adr的p -糖蛋白表達水平進行定性定量研究。用噻唑藍比色法mtt研究茶多酚的細胞毒性及其對耐藥性的逆轉作用，並與pgp抑制劑奎尼定進行了比較。免疫組化法檢測p -糖蛋白表達水平， mcf - 7 adr呈強陽性，而mcf - 7呈陰性流式細胞儀定量檢測結果mcf - 7 adr細胞系細胞陽性率為15 % ， mcf - 7細胞系細胞陽性率為1 . 8 % 。
  8. ( 3 ) it is known that load effect is not consistent with the section resistance incommon section continuous composite beam. a kind of composite beam with itsrational section size is suggested, which is consist of the t shape concrete beam andsteel girder. this kind of composite beam not only has enough carrying capacity, almost has same positive and negative resistance moment, but can decrease theamount of the steel

    （ 3 ）分析可知連續組合梁的跨中、支座截面處荷載作用效應及截面抗力規律不匹配，本文提出了採用t形混凝土梁和工字鋼代替一般的混凝土板和工字鋼的組合梁截面形式，並給出了截面尺寸比例，能使正負截面抵抗矩接近，符合組合梁受力特徵，減少了材料用量，滿足承載力和剛度等要求。
  9. We adopt the positive temperature coefficient real core resistance wire as the heating body and xlpe insulator as the inner core to make the heating cable with pvc coating outside or hdpe sheath. metal screen heating cable has earth conductor and aluminum screen layer or copper web screen layer. the product has advanced tie - in technology and it is safe, reliable and convenience for operation. the performance indexes meet iec800 standard. 3. technology indexes

    本公司生產的發熱電纜採用正溫度系數實芯電阻線發熱體，內芯採用xlpe絕緣，外包覆pvc或hdpe護套，屏蔽發熱電纜具有接地導線和鋁殼屏蔽層或銅網屏蔽層採用先進的接頭工藝，施工安全可靠方便性能指標符合iec800標準要求。
  10. Despite a sharp correction in march, ample liquidity and positive corporate results helped the market to recover quickly, although the previous all - time high of 20, 821 became a resistance level

    盡管3月份出現了劇烈修正，充裕的流動性和樂觀的公司盈利幫助市場快速收復失地，不過此前的歷史高點20 ， 821成為一個阻力位。
  11. Test standard for evaluating the simulated wind uplift resistance of roof assemblies using static positive and or negative differential pressures

    用靜態正和或負差壓評價屋頂組件耐模擬風吹起的試驗標準
  12. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  13. The average partical size of bismuth ruthenate and pbo - b _ 2o _ 3 - sio _ 2 glass was researched. the smaller bismuth ruthenate partical is, sheet resistivity is lower and temperature coefficient of resistance ( tcr ) is more positive and the refiring change ratio is nearer to zero. the limit size of bismuth ruthenate partical is 0. 56 m

    研究了各相粉體平均粒徑對膜層性能的影響，結果表明:釕酸鉍平均粒徑越小，膜層的方阻值越小，電阻溫度系數偏正，重燒變化率越接近零值，球磨工藝的極限平均粒徑為0 . 56 m 。
  14. 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。
  15. Too much cnts contributed no effect in the improvement of overall performance of the batteries. the batteries with nano - scale coo shows better active properties, the addition of nano - scale coo further the conductivity of the nickel electrode, thus lower the internal resistance of the batteries, higher discharge voltages are achieved accordingly. for the formation of the better conductive net of coooh, the effectivity of discharge rise, that contributes positive effect to the high rate capability of the batteries

    浙江人學碩十學位論文摘要正極添迦納米coo的ni / mh電池具有較好的活化性能，納米coo更好地增強了鎳正極的導電性，進一步減小了電池的內阻;正極添迦納米coo的ni / mh電池還具有較高的放電平臺;由於納米coo的納米結構，以及相對于普通c00更大的比表面積，會在堿液中溶解形成更均勻緻密的co0oh導電網路，從而提高了放電效率，對電池的高倍率性能也有積極的影響。
  16. When basement rock rupture pass through the well cross section, the fracture belts can be identified with some evidences, for example, the compensate neutron increasing and the stratum density diminishing synchronization, the dual - laterolog resistance diminishing greatly and the positive difference between the deep laterolog resistance and the shallow laterolog resistance appearing. when the compensate neutron increase, the stratum density diminishing and the dual - laterolog resistance value diminishing slightly, the fracture belts can be confirmed with the intrusive vein at high frequency in well cross section

    當有基巖斷裂在井削麵上通過時，若補償中子增大與地層密度變小同步發生，雙側向測井電阻率有明顯變低並有正差異出現，則可以判別為裂縫發育帶；當補償中子增大，地層密度變小及雙側向幅度變小都不太明顯時，則可以利用井剖面中頻繁出現的侵入巖脈來確定裂縫發育段。
  17. B, positive start has little water resistance and start - up pressure and the flow can be adjusted naturally according to hydraulic prssure

    B正向開啟水阻力小，啟動壓力小，且流量根據水壓自然調節
  18. We think increase of the internal resistance of battery is the main problem to the recycle life deteriorating at high rate, besides the influence of the materials. decomposition occurred on positive and negative electrode at high rate current and the interspaces increased. the restrains of swelling and the increase of an oxygen overvoltage can improve the performance of recycle life

    對于電池性能衰減的原因，認為除了所使用的材料是影響電池性能的重要因素之外，在溫度和大電流作用下，電池的正負極材料發生裂解，極片內空隙增大，電池內阻性能惡化是引起電池高倍率循環性能惡化的關鍵;通過抑制正極析氧和膨脹，並降低負極合金材料的粉化過程，將有望緩解電池內阻特性的惡化，從而提高電池高倍率充放電循環性能。
  19. Also, we select the signal collecting circuit of three output polars, the coupling circuit using capacitance and resistance, the alternating amplify processing circuit, the positive feedback retardation comparsion, the driving circuit of output current and the stabilization voltage supply circuit

    選擇了insb磁阻三端輸出型信號採集電路，阻容耦合型交流放大電路，正反饋遲滯型電壓比較器和大電流推挽驅動電路及穩壓電源電路。
  20. By testing the battery resistance, we chose the dimension of the square ni / mh battery of the 5. 7ah capacity as follow : the size of positive was 120mm 72mm, and the size of negative was 121mm 72mm, which presented the low resistance

    通過對電池歐姆內阻的測量，確定了5 . 7ah容量的方形ni / mh電池的最優的極片尺寸，即正極尺寸120mm 72mm ，負極尺寸121mm 72mm 。採用此種極片尺寸的方形ni / mh電池可以有較小的內阻。
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