past resistance 中文意思是什麼

past resistance 解釋
過去抗性
  • past : adj 1 過去的；完了的。2 剛過去的，上（月、星期等），前（…年）。3 前任的；曾任的；老練的。4 【語法...
  • 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. The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance

    爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。
  2. Considering the past research results, frost resistance of concrete using portland cement, and the designed service life of 100 years of testing bridge, the control indexes of high durability concrete are defined in this paper. mixture proportion of concrete used in pier column, coping, precast box beam and plate of bridge is designed based on the compact pile theory, and construction technique is studied also

    結合課題組以往的研究成果，根據試驗橋設計使用壽命100年的要求，確定出高耐久性混凝土的設計控制指標，基於最緊密堆積原理和最佳漿骨比原理對橋梁的墩柱、蓋梁、預制箱梁和橋面板用高耐久性混凝土的配合比進行設計，並對其施工應用技術進行了研究。
  3. Failure or even collapse of bridge structures in past earthquakes were largely. in particular, shear failure of short bridge pier columns is the most dangerous failure pattern due to the brittle nature. consequently, it is quite meaningful to study the seismic resistance performance and retrofitting for reducing bridge damages and losses

    從已建橋梁在歷次地震中破壞的共同特點可以看出:現代混凝土橋梁結構中，因鋼筋混凝土橋墩破壞導致橋梁嚴重破壞甚至倒塌，已成為橋梁震害的主要特點，特別是橋梁短柱的破壞尤為嚴重，而脆性剪切破壞是鋼筋混凝土短柱最為危險的破壞方式之一。
  4. In the past several decades, all kinds of research work have been carried out on the genetic resources of genus malus species. therefore, much progress has been made concerning the studies of the number of species, geographical distribution, morphology, classification, cytology, cell biology, reproductive biology and resistance characters to various environmental stresses

    在過去的幾十年中，我國的蘋果資源研究工作者對蘋果屬植物的種類、數量、分佈、形態學、系統學、孢粉學、細胞學、生殖生物學和抗逆境生物學特性等眾多方面開展了廣泛、系統和深入細致的研究，取得了許多重要成果，但也存在明顯不足。
  5. Abstract : the development of stealthy materials in the past several d ecades from the second world war up to now is comp endiously reviewed in this paper. recent study of new stealthy materials, suc h as ceramic materials and conducting polymer composites etc, is summarized from three areas of thermal resistance ， smart and plasma steal thy materials, and developing trend of the stealthy mat erials is also predicted in this paper

    文摘:簡單回顧了從二次世界大戰至今幾十年間，國外隱身材料的發展歷程；系統綜述了國外在陶瓷材料、導電高分子材料、晶須材料、納米材料、手征材料等新型隱身材料研究方面所取得的進展；從耐高溫隱身材料、智能隱身材料、等離子體隱身三個方面入手，重點介紹了國外近年來在隱身材料領域的最新進展；並且指出了隱身技術未來的發展方向。
  6. A heat transfer correlation is concluded by comparing the experimental results with the past conference correlations. and the deviation between the predicted and experimental values is 30 ?. the experiment on the evaporation resistance characteristics of r290 - 3gs mixture shows the oil concentration has negligible effect on the drop of the mixture

    R290含油混和物在水平微肋管內沸騰換熱的壓降實驗表明，在含油率范圍0 . 43 ? - 5 . 28 ?內，潤滑油濃度的增加對混合物沸騰換熱壓降的影響不是很大
  7. The earth dam had in the past usually been under severe impact during violent earthquakes. the rockfill dam with clay core in mania multi - purpose water project is constructed in high intensified areas, it is therefore imperative to have a thorough knowledge about the earthquake resistance of the dam

    以往土石壩在強震中曾遭受過嚴重的震害，滿拉水利樞紐工程土心墻堆石壩建立在高烈度區的土石壩，因此，了解和掌握滿拉大壩的抗震性能是非常必要的。
  8. Improving the electroless plating process based on the work of the past decreases the series resistance from 0. 5 to 0. 1, increases the parallel resistance from 45 to 1119. 7, improves the filling factors from 49. 8 % to 66. 3 %, therefore the conversion efficiency comes to 8. 2 %

    機械刻槽電池電池結構的設計是依據bp公司的刻槽電池設計的，在以前工作的基礎上，進一步改變化學鍍工藝條件，是串聯電阻由原來的0 so降低到了0 iq ，並聯電阻由原來45q增加到了1119
  9. The experience of past ten years hi highway construction shows that the practical life time of asphalt pavement is far more shorter than anticipated ( 15 - 20 years ). damages, such as cracking rutting and less of friction resistance are offer occurred in first two years. they caused direct and indirect economy losses and bad social influences

    十幾年的高等線公路建設實踐表明，瀝青路面的使用壽命遠小於予期的使用壽命（ 15 20年） ，往往在通車一兩年內出現坑槽、開裂、車轍、抗滑性能不足等早期損壞，帶來直接、間接的經濟損失和不良的社會影響。
  10. If the fundamental basis for dollar strength is not especially firm, the technical case for a stronger dollar is a bit more solid as multiple technical resistance levels have been breached in the past week

    如果說美元上漲的基本面因素並不穩固，相比之下技術面更加牢靠：上周多個技術阻力位已被突破。
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