perforation plate 中文意思是什麼

perforation plate 解釋
穿孔板 兩個導管節互相連接處，在其上下壁上會全部或部分之膜壁會消失而形成一開口，以利水分之運輸，此處之開口稱之
  • perforation : 冰穴礫阜
  • plate : n 1 厚金屬板 〈cf sheet〉 板（片）；（記有姓名等的金屬）牌子，（尤指醫生的）招牌，藏書牌；【印刷...
  1. It was shown that vessel elements in secondary xylem of p. emblica have many different forms and most of them have tails and their perforation plates divide into two types : ( 1 ) there is one simple perforation plate at each end of the vessel elements and ( 2 ) there is one simple perforation plate at one end of the vessel elements and two simple perforation plate at the other end ; ( 3 ) a few vessel elements have special inclusions ; ( 4 ) the intervascular pits are alternate pits ; ( 5 ) the pits between the vessels and rays are mixed pits, pits with transverse gashes and scalariform pits

    結果發現，余甘子次生木質部導管分子中存在著許多不同的樣式，導管分子大多數具尾；其穿孔板存在著兩種類型： （ 1 ）兩端均為1個單穿孔板； （ 2 ）一端為1個單穿孔板;另一端為2個單穿孔板； （ 3 ）極少數的導管分子具有特殊的內含物； （ 4 ）管間紋孔式為互列紋孔式； （ 5 ）導管射線間紋孔式為混合型紋孔與橫列刻痕狀紋孔以及梯狀穿孔。
  2. And experimental study on the heat transfer performance and pressure drop characteristic of the process of bubbling evaporative cooling are carried. as there are so little attention and studies on the process bubbling evaporative cooling about heat transfer in the world at present, this paper mainly deals with the effects of the different bare tower velocity, weir height, heat flux density and plate perforation geometries on the heat transfer coefficient and the pressure drop of the process of air flowing

    由於目前國內外對鼓泡蒸發冷卻過程在換熱方面的關注和研究較少，本文對不同空塔速度、不同堰高、不同熱流密度、多孔板的不同幾何尺寸對換熱系數及空氣流動過程阻力的影響進行了實驗研究及理論分析，總結了本實驗條件下換熱及阻力的實驗關聯式。
  3. The study is unfolded as the below : first, analyze the hypervelocity impact character, particular seeing about thin plate perforation, debris cloud character, thick plate crater, double plate impact feature, and take numerical simulation for thin plate perforation. then sum up intestine and outside formulary about perforation and crater

    首先，通過對超高速撞擊特性進行分析，詳細考察了薄板穿孔、碎片雲特性、中厚板成坑及雙層板的撞擊特性，對薄板穿孔特性進行數值模擬，並總結了國內外一些穿孔和成坑公式。
  4. The result shows that there are various patterns of vessel elements and three types of perforation plates : both ends of the vessel element are simple perforation plate ; one end with simple perforation, the other with two simple perforations ; one end with two simple perforations, the other with three simple perforations

    在荔枝的次生木質部中導管分子存在著多種的樣式，並且導管分子穿孔板存在著3種類型：兩端均為一個單穿孔板；一端一個單穿孔板另一端兩個單穿孔板；一端兩個單穿孔板另一端三個單穿孔板。
  5. Abstract : a previously proposed approximate quasi - static theoretical method is employed herein to examine the deformation and perforation of a simply - supported circular plate struck by a flat - faced projectile at normal incidence. based on the principle of virtual work, static load - displacement relationships are first obtained and then used to predict the energy - absorbing capacity of the plate subjected to relatively low speed impact. it is shown that good agreement is obtained between the theoretical predictions and the available experimental data, provided that adiabatic shear plugging failure does not occur, but the influence of strain rate sensitivity is taken into account

    文摘:採用準靜態近似理論方法分析簡支圓板在平頭彈丸正撞下的變形和穿透.首先基於虛功原理得到了靜態荷載位移關系，並將其用於預測低速沖擊下圓板的能量吸收能力.當考慮了材料的應變率敏感性，並且不發生絕熱剪切沖塞破壞的前提下，理論預測和實驗結果吻合良好
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