正弧 的英文怎麼說

中文拼音 [zhēnghú]
正弧 英文
regular arc
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 弧 : 名詞1. [數學] （圓周的任意一段） arc2. （古代指弓） bow
  1. The paper studies the surface geometry of globoidal indexing cam by applying the theory of conjugate surfaces and the method of coordinate transformation, presents the equations related to the main inducement curvature of the cam profiles, analysis and deduces the equations of two circumscription curves, which judge if the conjugate surface could mesh properly. some calculate examples and conclusion are given. the surface equation of the globoidal cam and conjugate equation are established

    論文首先在分析空間嚙合原理基礎上，採用坐標變換法推導出弧面分度凸輪的工作廓面方程、嚙合方程和壓力角計算公式，對弧面分度凸輪的嚙合特性進行了深入的分析和研究，對判斷曲面能否正確嚙合的依據如兩類界限線方程以及誘導主曲率等進行推導，並給出算例。
  2. Hyperopia long - sightedness a long - sighted or hyperopic eye is shorter than normal

    遠視的主要成因是眼球長度比正常短或角膜的弧度不足。
  3. Such research can lead to a new flight procedure design methodology, which copes with these problems and makes strong economical senses. under the guidance of aviation safety, efficiency, regularity and economy, this thesis applies the principle of the instrument flight procedure, firstly, to research the current vor / dme instrument flight procedure, namely the vor / dme instrument flight procedure ( vor / dmf. ifp ), its holding procedures, departure routes, arrival routes, and approach procedures, cor the terminal airspace

    本文在安全、效率、正常和經濟的原則下，運用儀表飛行程序設計的思想和原則，首先對在vor / dme導航臺上建立儀表進場航線、等待程序、儀表進近程序和儀表離場航線等機場空域內的飛行程序的設計方法進行了研究，總結出不同位置的vor / dme儀表飛行程序的布局形式、適用情況及其優缺點，並首次提出了以vor / dme為基準的封閉圓弧進近程序；其次，研究了基於vor / dme導航臺的區域導航飛行程序的設計方法；最後，研究了在現有的vor / dme儀表飛行程序上建立區域導航飛行程序的設計方法。
  4. Dentistry - orthodontic products - part 2 : attachments for seating archwires in orthodontics

    牙科學.正牙產品.第2部分:正牙學中固定弧形鋼絲用附
  5. According to the quickly adjustable characteristic of the peterson coil grounding system, this dissertation proposes a new control strategy. when the system is in operation, the strategy can limit the series resonance over - voltage by using the off - resonance method. when fault occurs, the strategy can conveniently suppressing arc by rapidly adjusting the inductance value of the peterson coil to the point, which the resonance with grounding capacitance of the power network is occurred

    依據可控硅控制消弧線圈接地系統的快速可控性，一改傳統的電網正常運行時調節消弧線圈接近於全補償的預調諧方法，提出正常運行時採用脫諧方法抑制串聯諧振過電壓；故障時立即調節消弧線圈電感量達到與對地電容諧振，以利熄弧的新型調節原理和方法。
  6. Global left entricular function and remodeling was assessed using ejection fraction, end systolic olume, and sphericity index

    採用射血分數、收縮末期容積和弧形指數（請專家指正評價左心室功能和結構重構。
  7. Abstract : the author discusses how to suppress electro - magneticinterference from electric - network and converting arc welder itself in electromagetic compatible technical, and then guaranteed the normal operating of equipment

    文摘:闡述了用電磁兼容技術抑制來自電網及逆變弧焊機自身產生的電磁干擾，保證了設備的正常工作。
  8. The condition for the normality of arc - transitive circulant graphs of order prime - squared

    2階弧傳遞循環圖的正規性條件
  9. Modification and match of big orthogonal convex or concave milling cutter ' s profile

    大前角圓弧銑刀齒形修正擬合
  10. Being one king of half - long idioaome, 563 has strange performance, it has both the characteristics of normal idioazome and the despun property of long idiozome, having the following characteristics : good elasticity, quick speed, high friction and spinning. it has the property of batting and lowening. having a certain function of guarding against loop drive

    563生膠是半長膠粒的一種，性能怪異，具有正常膠粒特點，也有長膠粒反旋轉的性能，彈性大，速度快，磨擦力大，有旋轉，有擊球下沉的性能，對弧圈球有一定的防禦作用。
  11. In this paper, it has been studied by the slope - controlled scr rectifier that external characteristic of welder relate to arc digging action and the strong arc force of arc welding power source in manual arc welding formed

    利用一種特製的變結構可控硅整流焊機，研究不同焊機外特性對電弧穿透力的影響；探討了手工電弧焊強電弧力形成機理；並且指出正確設計電源外特性，是獲得較強電弧穿透力的途徑。
  12. Avoid squatting and kneeling during work. use long - handle mops or brooms to clean the floor so as to avoid having to bend the trunk and strain the spine

    掃地抹地時，應盡量利用長柄工具，避免身驅俯前，以便維持腰背的正確弧度。
  13. Use long - handle mops or brooms to clean the floor so as to avoid having to bend the trunk and strain the spine. slightly bend the knees and tuck in your tummy before picking up heavy loads

    掃地、抹地時，應盡量利用長柄工具，避免身驅俯前，以便維持腰背的正確弧度。
  14. We are the exclusive producer of the planetary tube and pipe cutting machine in china. by totally eliminating problems occurred frequently in competitors product, such as pipe deformation, burring, and slant cutting, our machine is suitable for cutting almost all kinds of metal pipe and shows outstanding advantage, especially for thin - wall stainless steel pipe. these advantages make it the best choice for manual tig, wig welding, and orbital welding

    公司本次特推出行星式切管機，國內唯一，適用於幾乎所有金屬管道的切割，特別是對薄壁不銹鋼管的切割，其優點尤為突出，克服了一般切割機管道易變形毛刺多切口不垂直的缺點，是統一配套的手工氬弧焊機管管焊機的唯一正確選擇。
  15. Results all cases full rectifier or main rectifier, upper eyelid radian was perfect, closeness of eyelid was satisfied, none of exposure keratitis

    結果上瞼下垂完全矯正或基本矯正，瞼緣弧度美觀，符合生理，瞼裂閉合良好。
  16. First, the vacuum sensor suitable for vacuum degree on - line measurement in the vacuum interrupter is devised by the researches on panning discharge. then the vacuum sensor is calibrated, and also the corresponding curve which indicates that the vacuum degree respond to the current of the electric discharge is got

    首先，通過對潘寧放電原理的研究，設計了適用於真空滅弧室在線檢測真空度的真空傳感器，並對真空傳感器進行了校正，得到其真空度-離子流對應曲線。
  17. It was built in 1420 in the early ming dynasty and renovated in 1977. in the old days, watchtowers placed at regular intervals around the perimeter guarded the wall. the double gate system played an important role in repulsing enemy attacks

    明清時期正陽門城樓與箭樓之間原有一個巨大的甕城，南端呈弧形抹角，箭樓坐落在頂端，甕城南北長108米，東西寬88米，內有空場，四向均有門。
  18. In one quarter of a person ' s real awareness, he gives up pursueing the external world wealth, ？ ？ ？

    當一個人真正覺悟的一刻，他放棄追尋外在世界的財富，而開始追尋他內心瀾緄惱嬲?聘弧? （後面還真不知道是寫什麼） 。 。 。
  19. A general stack equation of mobile robot based on analyzing the motion of planar motion object and the mathematical models of four different kinds of common wheels is developed, accordingly, the mobility of mobile robot is addressed and the forward and inverse solutions to speed for specific configuration driven by differential speed are derived. utilizing the muir and newman convention, the description of the posture transformation matrices between different coordinate frames and the solution for the speed of point located on these frames are introduced. according to posture estimation, a more accurate method, dead reckoning algorithm, is developed for a specified configuration characterized by differential speed motorization, and simulations of this algorithm and other traditional methods are carried out using matlab while traversing a circular path

    本文對兩輪差速驅動移動機器人的運動學及其本體緩沖設計進行了探討，在對平面運動物體運動分析的基礎上結合四種常用車輪的數學模型，推導出了一個通用的移動機器人堆積方程，在此基礎上分析了移動機器人的移動能力、並針對兩輪差速構型推導了速度正解與逆解；使用muir和newman的運動學建模方法，推導了移動機器人上點及連桿坐標系位姿、速度變換關系矩陣及求解方法；在移動機器人位姿識別方法中結合差速驅動構型對航位推演算法進行了分析：推導了一種理論精度較高的航位推算演算法，並使用matlab對其與傳統的推算演算法在跟蹤圓弧軌跡情況下進行了模擬；最後針對本文所研究的機器人給出了一種比較系統、可靠的緩沖結構設計思路，較好地解決了移動機器人作業過程中外界因素及本身設計中引入的各種不確定誤差問題；本論文研究成果已在本實驗室所開發的樣機上得到實現，經過應用與考核證明其中的分析與設計是切實可行的。
  20. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
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