正負作用 的英文怎麼說

中文拼音 [zhēngfùzuòyòng]
正負作用 英文
positive and negative effects
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  1. The protein nucleic acid complexes were identified by autoradiography for 48 h. the psg5heo and igfbp - 6 promoter pcat vectors were transfected into cos - 7 cells with iipofectamin2000 ; these cos - 7 cells where treated with 1 jxm e2, with lonm tcdd and with both lonm tcdd and 1 jxm e2, individually ; the cat protein was examined by cat - els a. results : the congenital skeletal defects in fetal rats were induced with 10 - 15ug / kg tcdd or with 100 - 140 mg / kg ra with dosage - dependence effect. the igfbp - 6 mrna in rat calvaria tissue and mc - 3t3 - el cells were increased with tcdd and ( or ) ra, whereas the cell proliferation and igf - 2 mrna in mc - 3t3 - el cells was decreased in the status of e2

    結果: tcdd在大鼠胚胎發育時期具有骨骼致畸作用，骨骼發育畸形包括:內翻足、脊柱裂、顱面骨發育缺陷、無尾畸形等;隨著tcdd濃度的升高（ 10一15林擴kg ） ，致畸率明顯上升（ 14 . 7 %一24 . 6 % ） ; tcdd和ra聯合用藥可以增強對大鼠骨骼發育的致畸效應; e :對成骨細胞內igf一2基因有正性調節作用，對igfbp一6基因有負性調節作用， tcdd可以抑制e :對細胞內xgf一2和igfbp一6的調節作用。
  2. As a comparison, ba1. 03ce0. 8gd0. 2o3 - was synthesized by sol - gel method. among these samples, nonstoichiometric samples were synthesized for the first time. the research work involved : the crystal phase of the sinters were determined by xrd ; ionic conduction under different experimental atmospheres was measured by gas concentration cells ; performances of hydrogen - air fuel cells with the sinters as electrolytes and porous pt as electrodes were measured

    用粉末x射線衍射儀鑒定它們的結晶相；在（ 600 1000 ）范圍內，以燒結體作為電解質隔膜，多孔性pt黑為正、負電極， pt - rh合金網為集電極，分別組成氫濃差電池、氧濃差電池及氫?空氣燃料電池並測定了它們的性能，研究了不同氣氛下樣品的離子導電特性及影響燃料電池性能的因素。
  3. Salmeron is a plant geneticist at syngenta biotechnology, inc., in research triangle park, n. c

    薩美隆擔任先正達應用特徵遺傳學計畫負責人，從1989年起，就開始將遺傳學應用於作物改良上。
  4. Dna has negative charges and histone has positive ones. so the interaction between them is coulombic force

    Dna分子帶強負電而組蛋白則帶正電，庫侖相互作用起主要的作用。
  5. By physiognomy feature, it could be divided into three types of thermal structure : positive dome model, negative collapse model and border dome core collapse model. based on the depth degree or magma - thermal influenced, it could be divided into five types of thermal structure : ( ancient ) geothermal anomaly focus region model, superficial volcano eruption hydro - thermalism and hypabyssal intrusive model, thermal anticline ( thermal dome ) model, mid - deep intrusive model, deep mantle ( crust ) thermal plume model ; and put forward a perfect model of the thermal structure. there are many interaction system could be induced into a systematic thermal interaction, include : ocean - continent system, basin - mountain interaction, superficial and mid - deep crust - mantle interaction, crust - mantle commingle interaction, vertical thermal interaction ( delamination ) etc.

    依據地貌形態分為三類：正向穹窿型、負向塌陷型、邊隆核陷型：依據巖漿-熱力作用影響的深淺程度或深度分為五類： （古）地熱異常群集區、表淺層火山噴發-熱液活動與淺成侵入型、熱力背斜（熱穹窿） 、中深層侵入型、深部地幔（地殼）熱柱型；提出了熱力構造作用空間分佈的理想模式，將洋陸系統、盆山作用、淺表與中深部殼幔作用、殼幔混合、垂向熱力作用（拆沉）等納入一個整體統一的熱力作用系統中，為盆地動力學研究打開了一個新窗口；研討了熱力構造研究方法。
  6. Initiated by professor zhou jin - huang, the first national conference of cardiovascular pharmacology was held in 1980 in changsha, at which the committee of cardiovascular pharmacology affiliated to china society of pharmacology was founded. the main task of the committee is to be responsible for domestic and international academic interchange in cardiovascular pharmacology by playing a role of a bridge in enhancing the connection of cardiovascular pharmacology with related basic sciences, including phytochemistry, organic chemistry, pharmaceutical science and technology, and clinical medicine

    1979年正式成立中國藥理學會， 1980年在周金黃教授的倡導下在長沙舉行了第一次全國心血管藥理學術會議，成立了中國藥理學會心血管藥理專業委員會，它的任務是負責國內外心血管藥理學術交流，加強與心血管藥理學有關的基礎學科如植物化學、有機化學、制藥學以及臨床醫學的聯系，發揮橋梁作用。
  7. Conclusions drawn from the practice of a heavy rainfall process during 04 - 05, july, 2003 are : 1 ) results from the assimilation tests show that amsu - a data contributes mainly to adjusting temperature, positive temperature increment companies with negative humidity increment, and verso also ; amsu - b data contributes mainly to adjusting humidity, positive humidity increment companies with negative temperature increment, and verso also

    以2003年7月4日「南京暴雨」作為研究對象，結果如下： 1 ）同化試驗結果表明， amsu - a資料的主要作用在於調節溫度場，溫度正增量伴隨濕度的負增量，反之亦然； amsu - b資料主要貢獻在於改進濕度場，濕度正增量伴隨溫度的負增量，反之亦然。
  8. Among the pathophysiological mechanisms, the sudden shift from a positie to a negatie intrathoracic pressure plays an important role since it results on the one hand in an increased pressure gradient for systemic enous return and in cardiac preload and on the other hand in a decreased pressure gradient for left - entricular ejection and an increase in left - entricular afterload

    在諸多病理生理學機制中，胸內正壓向胸內負壓的突然轉換扮演了重要作用，一方面，是由於增加了體循環靜脈迴流的壓力梯度和心臟前負荷，另一方面，降低了左室射血的壓力梯度並增加了左室后負荷。
  9. On the surface of msta, there exists true dipole mode in the indian ocean, that ' s to say that if the temperature anomaly in the western indian ocean is positive, it is much likely that there is negative anomaly in the eastern indian ocean. dipole mode also exists in the pacific as that in the indian ocean. by virtue of the walker circulation and the similar circulation above the indian ocean, it is showed that the air - sea interaction events in the tropical pacific and the indian ocean develop with each other at the same time

    由於在次表層海溫距平極值面上，熱帶西、東印度洋的海溫距平呈真正意義的偶極子模態，即當西印度洋海溫距平為正（負）時，東印度洋海溫距平為負（正） ，偶極子模態的海溫距平分佈在熱帶太平洋同樣存在，兩大洋海溫距平的偶極子模態間有密切的聯系，結合walker環流和印度洋上空的類似walker環流，進而指出熱帶印度洋和太平洋海氣相互作用事件是協調發展的。
  10. Soil microbial biomass and viable population size ( plant counts ) were negatively affected by the elevated metal levels, but the size of soil basal respiration rate and microbial metabolic quotients were positively influenced by the increasing heavy metal pollution levels. microbial community structure also changed with increasing contamination, as indicated by biolog data and principal component analysis of biolog community metabolic profiles. soil microbial metabolic profiles ( awcd ) values, community richness and diversity index in mine - soils decreased remarkably as compared

    相關分析結果表明，土壤重金屬含量和土壤基礎呼吸、微生物量cfn 、代謝剖面（ awcd ） 、微生物商（ cmic / corg ） 、代謝商（ qc02 ）與人工栽培的香根草植物地上部分呈顯著或極顯著正相關（卜0 . 6653飛0 . 8945 」 ） ;微生物量c 、微生物量n 、生化作用強度、酶活性、群落shannon指數（ h ）和微生物群落豐富度（ s ）與人工栽培的香根草植物地上部分生物量呈顯著或極顯著地負相關（ r =一。
  11. Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in

    同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。
  12. The concentration ratio has more influence on the profit rate than the scale. state - owned property rights has little side - effect on the profit rate, concentration ratio of industry is the result of efficient competition

    而集中度比規模對利潤率的影響更大；國有產權對利潤率的負作用已經很小，行業集中度表現的是正常的效率競爭的結果。
  13. The circulation of positive pna index pattern is prominent in the case of persistent forcing of negative ssta in west wind drift region or positive ssta in tropical eastern pacific, which is the typical ssta pattern during el nino peak - mature phase

    西風漂流區持續負ssta時或者熱帶中東太平洋持續正ssta時，阿留申低壓均有所加強，正pna指數型的大氣環流特徵顯著。而當相反符號的ssta持續作用時，大氣中阿留申低壓減弱，對應pna指數為負。
  14. This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway

    負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異，因此表現為比普通混凝土更為較高的耐久性要求；負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能，才能夠滿足工程實際應用的要求，這也是負溫混凝土必須解決的兩大技術關鍵；通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討，採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線，通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ；並在此基礎上配製不同等級負溫高性能混凝土，開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究；通過對fd - 1組分和摻量的調整，優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。
  15. With the development of the electric power system, static - state reactive power compensators ca n ' t have met the requirements of the actual production and operation, and the trend to the fast and dynamic compensation for reactive power become greater and greater. since ertan hydroplant and 500kv transmission systems in sichuan power system have been operated, many power plants of load center are forced to halt during the high - water period, because the great deal of power is transmitted to far - distance load center. thus the load center loses voltage sustentation and the level of the system stabilization is debased greatly

    四川電網的二灘水電站和500kv輸變電系統投入運行后，由於二灘水電站的大量電力遠距離輸送至負荷中心，迫使負荷中心的火電機組在豐水期大量停機，使負荷中心失去電壓支撐，大大降低了電網的電壓穩定水平；同時，因為四川電網中的無功補償裝置全為靜態無功補償電容器（或電抗器） ，這些設備只能在系統正常運行狀態下起到無功補償和電壓支撐的作用，而在電網出現事故時，不但不能起到電壓支撐作用，反而會促使電網電壓崩潰事故的發生。
  16. ( 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。
  17. Will they be positive or negative

    是正面作用還是負作用？
  18. However, this confused understanding of friendship and love, but in practice generally hamper the development of young people to play a negative role legitimate friendship

    然而，這種混淆友情和愛情的理解，卻在實際上普遍地起著妨礙青少年發展正當友誼的負作用。
  19. Technological introduction itself is negative to economic growth as well as research and development, but their interaction is positive which indicates that research and development on the base of technological introduction can hasten economic growth

    由知識存量的增加所導致的技術進步中，單獨的技術引進和研發對經濟增長是負作用，而兩者之間的交互項卻是正作用，說明在技術引進的的基礎上必須進行研發，才能達到對經濟增長的促進作用。
  20. The university social and scientific journal has a positive effect on the academic standardization. however, if it ' s improperly dealt with, it has a negative effect on the academic standardization

    高校社科學報對學術規范化具有正面作用，但如果處理不當，也會對學術規范化起到負面效果。
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