downstream resistance 中文意思是什麼

downstream resistance 解釋
下游氣道阻力
  • downstream : adv. ,adj. 順流（的）；在下游（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. Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers

    結合魚劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
  2. When compared with kds301 ( lexa + ), xe ( lexa - ) cells showed quite similar levels of survival curve to y - irradiation and mmc, indicating lexa gene had no effect on radiation resistance of deinococcus radiodurans. deinococcus radiodurans " lexa had no revelance with its extremely radioresistance. the recombinant plasmid pza172 was constructed by cloning the lexa gene of deinococcus radiodurans into the vector plasmid puc19 in the downstream of lacz promoter

    對lexa基因突變體xe的研究表明，其輻射抗性與lexa基因野生型的抗輻射菌kd8301相近，存活曲線上均顯示有一個寬大的肩區，結果發現lexa基因的突變並沒有改變抗輻射菌的獨特抗性，說明lexa基因與輻射抗性無關。
  3. The gd and ge gene was subcloned into puc18, resulting in pugdge. the fragment from pcdnas. 1 - including hcmv promoter / enhancer, mcs and neomycin resistance gene was inserted into the bamhi and bsteii restrication sites of pugdge, resulting in the universal transfer vector pgd - m - ge. the universal transfer vector pgd - m - ge has deleted the gi gene and 363bp in the 5 ' end of the ge orf of prv. there were 11 restrication sites for insertion of the foreign gene. the upstream and downstream flanking sequences were up to 1. 25kb and 1. 42kb. it will be useful for developing the recombinant prv expressing foreign gene ( s )

    將gd 、 ge基因連接于質粒puc18獲得pugdge ，缺失質粒pugdge的bamh和bste位點間391bp的片段。在此缺失位置插入來自質粒pcdna3 . 1 -的一偽狂犬病病毒gd 、 ge 、 tk基因的克隆與通用轉移載體的構建段含hcmv啟動子。多克隆位點和neo報告基因的片段，構建了通用轉移載體ppd m pe 。
  4. Abstract : based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers

    文摘:結合魚劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
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