拋物線形狀 的英文怎麼說

中文拼音 [pāowùxiànxíngzhuàng]
拋物線形狀 英文
shape of a parabola
  • 拋 : 動詞1. （扔; 投擲） throw; toss; fling 2. （丟下; 拋棄） leave behind; cast aside; abandon
  • 物 : 名詞1 （東西） thing; matter; object 2 （指自己以外的人或與己相對的環境） other people; the outsi...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 狀 : Ⅰ名詞1 （形狀） form; shape 2 （情況） state; condition; situation; circumstances 3 （陳述事件或...
  1. The stress - strain relationship of narcss can be regressed by parabola

    其關系曲線形狀呈拋物線。
  2. A reliability experiment of thermal aging was carried out for the two types of joints, scanning electron microscopy, energy dispersive x - ray spectrometer and micro x - ray diffractomer were adopted to investigate the interfacial evolution behavior of joints, and kinetics model of imc formation was established. the results show that imc growth follows the parabolic law as a function of aging time at certain aging temperature, imc growth is more sensitive to the aging temperature than the aging time, the activation energy of cu - al imc growth is 97. 1kj / mol and the major forming cu - al imc are cual2 and cu9al4, the activation energy of au - al imc growth is 40. 1kj / mol and the main au - al imc are au4al and au5al2, with au2al and aual at the interfacial periphery of joints, the rate of cu - al imc growth is about 1000 times slower than that of au - al imc, and kirkendall voids and cracks are easily appeared during thermal aging in gold ball bonds while voids and cracks are absent in copper ball bonds even after aging at 200 for 2900 hours and 250 for 169 hours

    研究結果表明:金屬間化合物厚度與老化時間的關系符合拋物線法則，金屬間化合物的生長對老化溫度比老化時間更加敏感; cu - al金屬間化合物生長的激活能為97 . 1kj / mol ，老化后金屬間化合物呈層狀分佈，主要相為cual2和cu9al4 ; au - al金屬間化合物生長的激活能為40 . 1kj / mol ，主要相為au4al和au5al2 ，同時在界面周邊區域生成了au2al和aual ;老化過程中cu - al金屬間化合物生長速率比au - al金屬間化合物生長速率小103數量級;金絲球鍵合點200老化96小時出現了明顯的kirkendall空洞和裂紋，但銅絲球鍵合點200老化2900小時和250老化169小時都沒有形成空洞和裂紋。
  3. The original flow rate formula of parobolic throat flume used for u - shaped channel is implicit function and is not convenient for calculation in irrigation districts. an simplified formula is developed in this paper, with a di fference between results calculated with the original formula and the new formul a being less than 0. 5 %

    用於u形渠道量水的拋物線形喉口式量水槽原流量公式為隱函數形式，針對其使用不便的現狀，通過理論分析推導出了顯函數形式的量水槽流量公式，計算結果與原流量公式比較相對誤差值0 . 5 % 。
  4. A calculation method and calculation results that show that a new kind of shaped paraboloid antennas can produce a ringy radiation pattern is presented

    摘要通過數值計算發現：將拋物線繞通過焦點的非拋物線對稱軸旋轉而形成的賦形拋物面天線可產生環狀的方向圖主瓣（此主瓣指的是主瓣最大值處） 。
  5. Abstract : in this paper, the static shape control of the flexible intelligent thin - shell structure is derived by the intelligent thin - shell element of ref. 5. finally, a numerical example of a paraboloid antenna is given

    文摘:應用文獻5給出的三維智能薄殼單元研究了柔性薄殼智能結構的靜態形狀控制問題，給出了拋物面形天線的靜態形狀控制算例。
  6. The stresses and strarns of cylindrical spherical and paraboloid shells can be solved when the drawing unsteadiness happen

    文中就圓柱殼形、圓球殼形、拋物線殼形封頭等壓力容器的失穩狀態，分別求出它們的應力和應變。
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