超低出生體重 的英文怎麼說

中文拼音 [chāodīchūshēngtǐzhòng]
超低出生體重 英文
ultralow birth weight
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 生 : Ⅰ動詞1 （生育; 生殖） give birth to; bear 2 （出生） be born 3 （生長） grow 4 （生存; 活） live;...
  • 體 : 體構詞成分。
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 超低 : super low frequency
  • 體重 : （body） weight
  1. Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail

    針對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展方向，本論文重點做了以下幾個方面的工作，目的在於提高dtc系統的綜合性能： （ 1 ）提出一種新型的速度磁鏈觀測器，新型的速度磁鏈觀測器採用自適應閉環磁鏈觀測器代替傳統的積分器從而提高磁鏈觀測的精度，並且根據popov超穩定性理論推導出轉速的新型自適應收斂律； （ 2 ）改善系統的低速運行性能，主要從提高低速時對定子磁鏈的估計精度入手，提出了一種提高定子磁鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數； （ 3 ）採用數字信號處理器dsp實現系統全數字化硬體控制，結合ti公司生產的tms320lf2407晶元，設計了直接轉矩控制系統的實驗裝置； （ 4 ）提出了基於sercos總線網路化分散式的直接轉矩控制系統， sercos （ serialrealtimecommunicationsystem ）是目前最適合同步和協調控制的串列實時通信協議； （ 5 ）基本勾勒出整個控制系統的硬體和軟體設計基本框架，詳細描述一些實驗中的具體的細節問題。
  2. The problems of feed quality in hubei were that ( 1 ) the rate of feed fitness in hubei is 5 % lower than that of the average of the nation simultaneity ; ( 2 ) banned medicine was still used in some enterprise ; ( 3 ) the indexes of feed hygiene in some feed products exceeded the feed hygiene standard of china ; ( 4 ) operate the unit numbers problem serious ; ( 5 ) feed label was not in accordance with the standard that the enterprise carried out ; ( 6 ) the area of feed dealing was mess ; ( 7 ) a few enterprises imitated the others feed label with intention ; ( 8 ) the standard of feed products of some enterprises were not scientific

    湖北省飼料質量狀祝評估研究總體來看，我省飼料產品整體質量狀況不容樂觀，突出表現為8個方而的問題:一是合格率偏低，與全國同期各階段抽查情況來比較，我省的合格率一般低5個百分點左右;二是違禁添加藥物現象依然存在;三是飼料產品衛生指標超標嚴重:四是飼料經營環節質量問題突出;五是飼料產品標簽不規范;六是部分飼料生產企業內部管理混亂，管理水平急待加強和提高;七是少數飼料生產企業有意造假;八是部分飼料產品企業標準不科學。
  3. Cohens group found that adolescents who lived inneighborhoodswith high levels of collective efficacy were also lesslikely to beoverweight or at risk for overweight and had a lowerbody massindex - a ratio of weight to border 1 height - thandid their peers inother neighborhoods. adolescents in low - collective efficacy neighborhoods, on theotherhand, were 64 percent more likely to beat - risk - for - overweight and52 percent more likely to be overweightthan those living inneighborhoods with an average level ofcollective efficacy, theresearchers report in the journal socialscience and medicine

    從調查結果來看，與群體功效水平高的社區里的同伴相比，那些生活在群體功效水平較低的社區里的青少年出現體重超標的危險性要比前者高出64 ，即使與那些生活在群體功效水平正常的社區里的同齡人相比，這種危險性也會高出52 。
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