head resistance 中文意思是什麼

head resistance 解釋
頭部阻力
  • head : n 1 頭，頭部，首。2 頭腦，才能；智力，想像力，理解力。3 前部，上部；頂端，尖突部；船長；（書頁等...
  • 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. This is portable pump with strong suction and medium head doss, equiped with extraordinary hair collector ; the body is made of themal plastic of strength ening fiberglass with good corrosive and impact resistance ; and with the advan tages of high flow, quiet

    這是一款輕便、自吸式、中等揚程的水泵、配有特大的毛發收集器；泵體由玻纖增強的工程塑料注塑而成；有良好的抗沖性和耐腐蝕性；此水泵具有高流量、運行安靜之優點。
  2. Using the advanced technology by its head office ( newkey co., ltd. ), it produces various kinds of alumina black and white ceramic products. the component alumina ceramics, which are widely used in electron components, devices, electrical products, enjoy low loss of high frequency, high insulating strength, good specific volume resistance, small dielectric constant, high mechanical intensity and excellent airtightness and thermal and chemical stability

    本公司根據目前市場需求，生產出各種型號的黑、白陶瓷產品，廣泛應用於電子、電工、化學工業、紡織工業、水暖、宇航、環保等諸多方面，系列產品有高頻損耗少，比體積電阻大，介電常數小，強度高，氣密性、熱穩定性、化學穩定性好等特點。
  3. Abstract : by means of metallographical examination and sem, the microstructure characteristics, macro - and microfractographs of the brittle broken wheel hull bolt of bj212 automobile have been studied. the results show that the thin - headed screw, with excessively deep carbonitriding layer and hardening layer, has less resistance to brittle fracture in the thin area of its head. at the root of the head connecting the stem, a tensile stress may emerge owing to the non - even quenching stress. those are the two reasons for low torque fracture of bolt

    文摘:藉助金相、掃描電鏡等手段對低扭矩脆斷的bj212汽車輪殼螺栓的金相組織特徵，宏觀和微觀斷口形貌等進行了研究，結果表明：這種頭部薄的螺栓，滲層和淬透層過深，使頭部薄區脆斷抗力降低，在頭部與桿的根部，由於淬火應力不均勻導致根部產生拉應力，均是導致螺栓低扭矩斷裂的原因。
  4. Based on this view, this paper analyzes the suitability of protective respirators to human body, and systematically puts forward such ergonomic problems as seal, respiratory resistance, dead space and field of vision about protective respirators at the angle of human facial features and bio - mechanical characteristics of head and neck

    筆者從人體的面部形態與生理機能角度，分析了呼吸防護用品與人體的適配性，系統提出密合性、呼吸阻力、死腔、視野等呼吸防護用品的人機工效學問題。
  5. , standard guide for abrasion resistance of textile fabrics rotary platform, double - head method

    紡織品耐磨性的標準試驗方法
  6. Standard test method for coated fabrics abrasion resistance rotary platform, double - head abrader

    塗層織物耐磨性的標準試驗方法
  7. Gliding of grinding head holder adopts double straight line rolling glide. double ball screw rod transmission stabilizes moving speed and eliminates moving gap, reduces resistance and wear out, and ensures repeated positioning

    磨頭座滑動採用雙直線滾動導軌，雙滾珠絲桿傳動，以達到穩定移動速度，消除移動間隙。
  8. Fasteners. resistance welding screws. reduced head. symbol z sr

    緊固件.電阻焊金屬螺釘.縮小釘頭
  9. Methods of test for pallet joints - part 2 : determination of withdrawal and head pull - through resistance of pallet nails and staples

    托盤接頭的試驗方法.第2部分:托盤釘子和u形釘抗拔出和釘頭拉穿的測定
  10. This article introduces key process of head forming, quality control of the cladding, zirconium surface protection and quality inspection to guarantee the corrossion resistance of the zirconium and mechanic performance of head

    介紹了鋯鋼復合板質量控制、封頭壓制工藝、鋯材表面防護、質量檢驗等幾個關鍵工序要求，既保證了鋯復層的耐腐蝕性又使封頭具有一定的綜合力學性能。
  11. 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
  12. In the forth chapter, the performances of mr dampers designed and fabricated at chongqing university have been tested in national center for test and supervision of coach quality, including schematics of damping force vs. displacement of piston head, damping force vs. velocity of piston head, etc. for some given electric currents of the coil. the experimental results demonstrate that damping force offered by mr damper consists of background damping generated by resistance of mr fluid and damping caused by magnetic field

    對不同勵磁電流條件下的理論阻尼力與測試阻尼力進行了比較，分析了產生誤差的主要原因；對阻尼器產生溫度效應產生的主要原因進行了分析，提出了應該提高磁流變體的溫度穩定性；推導了磁流變體的感性和容性流動方程，從理論上分析了磁流變體的感性和容性對阻尼器特性的影響。
  13. It is indicated that, when a two - speed motor is used for driving oil transfer pump, the motor with the characteristic of torque reduction on square rotary speed should be chosen ; the working economy of the variable speed pump is restricted by the characteristic curves of pipeline resistance, and its speed control range is restricted by the pipeline resistance characteristic curve, the pressure head needed by the system and the working characteristic of the pump ; when several pumps work in parallel, the pump with better performance should be changed into speed - variable pump

    指出雙速電動機用於輸油泵的調速時，應選用轉矩按轉速平方降低特性的電動機；調速泵的運行經濟性受到管路阻力特性曲線的限制，其調速范圍受到管路阻力特性曲線、系統所需揚程和泵運行特性的限制；在母管制系統中把部分定速泵改為調速泵時，應將性能較高的定速泵改為調速泵。
  14. Morph beam : the fusing of an aerodynamic widebody head with a traditional, box - shaped shaft for greater resistance to twisting and a more solid feel

    形態梁：符合空氣動力學特徵的寬體拍頭和傳統的方型拍梁的結合，可以大大增強球拍的抗扭力水平，並提供更佳的球感。
  15. Points out that some designers only use empirical methods in determining the inner diameter of pipeline, calculating system resistance and selecting the rated flow and rated head of circulating pumps in water systems

    摘要指出目前一些設計人員在設計空調水系統時，僅根據經驗值估算管道內徑、計算管路阻力和選配系統循環水泵的流量和揚程。
  16. A comparison is made with available simplified theories such as that corresponding to plane strain model. the comparison involves many aspects such as the soil resistance factor, the soil complex local stiffness and the pile complex stiffness at the level of the pile head. the applicability of the other two models is analyzed and checked

    3 、將本文嚴格解與其它簡化解（如基於平面應變假定的解等）從土層阻抗因子、土層局部復剛度和樁頂復剛度等方面進行了對比分析，檢驗和校核了簡化解的適用性。
  17. Explosion - proof sheathed thermocouple and thermal resistance with temperature transmitter and display are manufactured from sheath element, protective tube, explosion - proof connection head, temperaturetransmitter and front - back cover of display

    隔爆型帶溫變帶顯示鎧裝熱電偶熱電阻鎧裝元件保護管隔爆接線盒溫度變送器顯示器前後蓋組成。
  18. Thus the resistance factor and vibration modes of the soil layer are obtained and used to analysis the pile response. by considering the interaction between the soil layer and the pile with boundary condition of continuity of displacement and equilibrium of force at the interface of soil layer and pile, the dynamic equilibrium equation of pile is solved and an analytical solution for the pile response in frequency domain is yielded, which is used to define complex stiffness and mobility at the level of the pile head. based on the convolution theorem and inverse fourier transform, a semi - analytical solution of velocity response in time - domain subjected to a semi - sine exciting force is given

    首先通過引入勢函數方法對土體位移進行分解，從而將土體動力平衡方程解耦，求解得到了土層的振動模態和阻抗因子，然後利用該解以小應變條件下樁土接觸面上力平衡和位移連續條件來考慮樁土耦合作用，求解樁的動力平衡方程，得到了樁頂的頻域響應解析解、復剛度和速度導納，利用卷積定理和傅里葉逆變換，求得了半正弦脈沖激振力作用下樁頂速度時域響應半解析解。
  19. Abstract : for high arch dams in valleys with the characteristics of high water head, large discharge and large power, the problems of energy dissipation and scour prevention are serious. based on scientific studies, new comprehensive measures are proposed, including dispersion of discharge to waken wallop of the current, and reinforcement of riverbed to enhance the erosion - resistance. the measures can be used to solve the problem of energy dissipation properly. a typical layout scheme has been proposed in which slotted bucket with diversion teeth, double deck with pores, and cushion pool are considered practice has proved that the scheme is reliable and the effect of energy dissipation is obvious

    文摘:高拱壩泄洪消能的特點是壩高落差大，流量大，功率大，位於河谷狹窄地區，泄洪消能與防沖問題突出.經科學研究，採用「分散泄洪，削弱水流沖擊力，加固河床，增強河道抗沖能力」的綜合治理措施，較好地解決泄洪消能布置問題.提出了表孔大差動坎加分流齒、雙層多孔、水流撞擊、下設水墊塘聯合消能的典型布置方案，經實踐證明，方案可靠，消能效果好
  20. Others show up as patterns ( eg head and shoulders, trendlines, support and resistance )

    其他顯示為圖案（如頭肩，趨勢線，支撐和阻力） 。
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