perforation rate 中文意思是什麼
perforation rate
解釋
穿孔速度- perforation : 冰穴礫阜
- rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
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Perforation o f fallopian tube occured in 2 cases ( 0. 39 % ). ectopic pregnancy occured in 6 cases ( 1. 19 % ). the complication rate was much lower than that reported by foreign a uthors. conclusions : with self - made selective oviduct recan alization catheter, the combined use of uterocervical traction and a maneuv er of washing first, recanalizing second can improve the success rate of recanal ization with less complications
討論：採用自製選擇性輸卵管再通導管並在輸卵管疏通過程中，應用宮頸牽引法、先沖后通法的操作手法，可提高輸卵管再通的成功率，降低並發癥的發生。 -
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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