primary resistance 中文意思是什麼

primary resistance 解釋
一次電路電阻
  • primary : adj 1 第一的，最初的，初級的；初等的；基本的；基層的。2 主要的，為首的，第一位的。3 原始的，根本...
  • 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. Recently, the chinese plant protection agencies reported the growing hardships in controlling some field populations of oriental migratory locust with organophosphate ( op ) compounds. up to now there are more than 600 arthropod species with documented resistance to one or more insecticides and / or acaricides since resistance phenomenon was first described in san jose scale to lime - sulfur in washington in 1908. enhanced metabolic detoxification and reduced sensitivity of insecticide target - sites are the two major mechanisms in resistance development, involving three primary metabolic enzymes of esterases, glutathione s - transferases and cytochrome p450 polysubstrate monooxygenases

    代謝抗性是指對殺蟲劑起水解或隔離作用的酶發生改變，從而對殺蟲劑起到解毒作用，昆蟲主要解毒酶系有酯酶、谷胱甘肽- s -轉移酶、細胞色素p450單加氧酶等，這三種酶系任何一種的組成部分發生改變均會引起害蟲抗性的改變；靶標抗性是指由於殺蟲劑作用靶標敏感度降低而產生的抗性。
  2. Substances conveying plant resistance to insects include inorganics, primary and intermediary metabolites and secondary substances.

    給予植物抗蟲性的物質包括無機物，初始、中間代謝物和次生物質。
  3. Now it has been one of the most important aquatic products in the freshwater cultivation. however, this prawn ca n ' t survive at a water temperature lower than 14c, which has seriously limited its cultivation expanding. in order to obta in a new breed of this prawn with increased cold - resistance, we investigated the cloning of a synthetic gene ( sbwafp ) based on the primary sequence of the mature spruce budworm ( choristoneura fumiferana ) antifreeze protein ( sbwafp ) and the integration of sbwafp into the embryo genomes of giant freshwater prawn by spermatophore - microinjection ( smi ), a sperm - mediated gene transfer technique

    本研究的特色和創新之處在於，針對羅氏沼蝦不耐低溫，但體型相對較大，精莢明顯的特點，首次將目前已知具有最強抗凍活性的雲杉卷葉蛾（ sprucebudworm ， choristoneurafumiferana ）抗凍蛋白（ sbwafp ）基因（ sbwafp ） ，通過精子介導的轉基因技術整合到羅氏沼蝦的胚胎中，以期培育出耐低溫的羅氏沼蝦新品系。
  4. 28cr high chromium cast iron is one of primary wear resistance materials, which is in use at present. it shows superior performance in corrosion wear and abrasive wear

    28cr高鉻鑄鐵是目前使用的主要的抗磨材料之一，在抵抗腐蝕磨損和磨料磨損中表現出優越的性能。
  5. 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。
  6. This paper analyzed the shortcomings of the temperature control system of the primary resistance furnace used to make soft magnetic ferrite rings, and introduces a technology using chip microprocessors 8031 to improve the temperature control system of the primary resistance furnace

    摘要分析了電阻爐原溫度拉制系統用於燒制軟磁環時存在的不足，提出了採用8031單片機對原溫度控制系統進行改造。
  7. Primary study on identification of corn - borer resistance in corn inbred - lines transferred with bt gene

    基因自交系的抗玉米螟特性鑒定初報
  8. Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis. then, seismic response analytical models and non - isolated continuous rigid frame bridges are set up, while considering the interaction of soil - pile - structure and traveling wave effect simultaneously. finally, the seismic time history response of the two models is calculated by means of the finite element method, and the results show that the isolated bridge posses powerful earthquake resistance

    首先論述了公路大跨徑橋梁的地震反應分析方法，其中包括樁-土-結構相互作用、行波效應等因素對結構物的影響；其次，利用結構矩陣分析中的主從變換和逆步變換，推演了幾個特殊單元的剛度矩陣，包括橡膠隔震層單元和帶剛域構件單元；最後，考慮樁-土-結構相互作用和行波效應的結合，分別建立隔震與非隔震連續剛構橋地震反應分析模型，通過有限元法對兩種結構進行時程分析，結果表明：隔震層上部結構的地震加速度反應、位移反應均明顯減小，這說明隔震的連續剛構橋具有很好的抗震能力。
  9. The effect of the primary and secondary winding widths on the power loss and energy storage are analyzed for the pcb winding pattern by using 2d - fem, it is demonstrated that when the primary and secondary have the same winding width, the transformer has the lowest ac - resistance and leakage, this suggests ways the designer can modify the winding arrangement to minimize the loss of transformer

    利用ansoft電磁場模擬軟體和本人開發的一維平面變壓器的繞組損耗計算程序對pcb繞組的並聯繞組的設計問題和pcb板繞組原副邊寬度相等問題進行了研究，提出了減少pcb板繞組的高頻損耗的設計方法。
  10. In this system, mean velocity pipe is applied to transform the air velocity signal into pressure difference signal, and then the pressure difference signal is input into pressure difference transmitter to realize the transform of the pressure difference signal from non - electricity signal to electric current, and through the resistance in the corresponding sampling circuit the electric current is transformed into voltage signal ; the thermocouple is used as the primary element to realize the transform from temperature signal to the voltage signal ; under the control of communication agreement module, diversified voltage signal is transported into computer by way of a / d conversion module, and then the monitoring software compiled beforehand is transferred to deal with all the voltage signals relatively, the result of which is conveyed to relative interface to display

    該裝置具有三個特點：一是採用表面式測溫方法，有效地減少了元件的維護與損耗；二是採用工業控制計算機及信息就地採集、數據總線傳輸的方式，充分利用計算機和數據自動採集方面的技術，實現各種參數的在線測量，監測指標全面，能與dcs系統聯用，具有技術先進性和一定的前瞻性；三是採用顯示器配工業觸摸屏的顯示方式，為現場運行人員提供了簡單、易學、方便的操作模式。本裝置自2001年8月投入運行以來，有效地幫助、指導運行人員進行燃燒調整，對于鍋爐和機組的安全、經濟運行發揮了重要作用。
  11. Obtained transgenic wheat induced by anti - pld gene and its primary identification of powdery mildew resistance

    基因小麥的獲得及其抗白粉病的初步鑒定
  12. And the primary and secondary relation of the factors and the optimum level of every factor were obtained as well as the best scheme of structure design in the research condition. regression equal between traction resistance and partial sphere height, bottom circle radium was set up to explore the effect of two evident factors ( height and bottom circle radium of the partial sphere ) on traction resistance by optimum calculation

    採用二次回歸試驗設計的方法，建立了球冠高度和球冠底圓半徑大小與牽引阻力間的回歸方程，進行了優化計算，進一步考察了球冠高度和球冠底圓半徑大小兩個顯著性因素對牽引阻力的影響規律。
  13. Appliance coupling for the primary connection of resistance welding transformers, 200 a 550 v

    200a . 550v電阻焊接變壓器初級線圈連接裝置耦合器
  14. In order to accelerate the development of preflex composite beam in railway bridges and to design and construct preflex composite beam bridges of railway in our country reasonably, this thesis is from the scientific project of railway department " experiment and application research of railway preflex composite beam " and summarizes the design information and practical projects on preflex composite beam. on the basis of above works, this thesis improves computation method in analysis of railway preflex composite beam on sectional stress, deflection of mid - span, crack width and shearing resistance and programs a software " preflex composite beam bridge structure analysis system - pfsas ", which is adapt to railway bridges in our country. moreover it makes a primary research in construction techniques and structure measures

    為了迅速促進預彎組合梁在我國鐵路橋梁中的發展，合理地進行我國鐵路預彎組合梁橋的設計和施工，本文結合鐵道部科技研究開發項目「鐵路預彎組合梁的實驗與應用研究」 ，在總結以往對預彎組合梁力學性能研究成果及實際工程的基礎上，完善了鐵路預彎組合梁的截面應力、跨中撓度、裂縫寬度和抗剪分析的計算方法；編制了適用於我國鐵路橋梁的「預彎組合梁橋結構分析系統? ? pfsas 」軟體；並對預彎組合梁的施工工藝及構造措施進行了初步探索。
  15. Results and conclusion : inhaled iloprost can reduce pulmonary vascular resistance and delay the development of primary pulmonary hypertension

    結果和結倫：吸入性伊洛前列素治療可以降低肺血管阻力和延緩原發性肺動脈高壓的進程。
  16. Primary observation of reversal of multidrug resistance in k562 a02 cells with radix angelicae sinensis

    02細胞對阿黴素耐藥性的初步觀察
  17. Primary discussion on treatment of insulin resistance of type 2 diabetes mellitus from toxin impairing liver collaterals

    2型糖尿病胰島素抵抗從毒損肝絡論治的理論初探
  18. The result shows that, when expansion agent is added, shrinkage can he compensated at some extent and crack can be restrained or reduced effectie1y and then the concrete ageing resistance can he enhanced, and under experiment condition, the appropriate mix content of the expansion agent should be less than 6 %, finally, for compensation shrinkage concrete, the restrictive expansion rete should he the primary index

    結果表明，加入膨脹劑能補償部分收縮，有效抑制或減少裂縫的產生，提高混凝土的耐久性；試驗條件下試驗所用膨脹劑的適宜摻量應小於6 % ；對補償收縮混凝土，其限制膨脹率應作為第一性指標。
  19. The most effective method of exercise are high - tech machines, because they meet the requirements of offering the primary exercise needs of the body, full - range progressive resistance

    最有效的方法是運用高科技儀器、因為他們適應工作的需要，開辦初級身體全面進步的阻力
  20. Group a streptococcus, the primary bacteria causing pharyngitis, have been uniformly susceptible to amoxicillin and have not developed resistance to the penicillins, despite the long - term use of amoxicillin for pharyngitis

    組鏈球菌是引起咽炎的主要細菌，均對阿莫西林敏感，並且盡管長期使用阿莫西林治療咽炎，它仍沒有產生對青霉素的抗藥性。
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