step up ratio 中文意思是什麼

step up ratio 解釋
升壓比
  • step : vi ( pp )1 走;跨步。2 踩,踏上 (on)。3 跳舞,輕快地走,合著步調走。4 跨入,踏進。5 走上。vt ...
  • up : adv (superl uppermost )1 向[在]上,向[在]上面;向[在]被認為處于上方的地方或方面〈如河流的源頭,...
  • ratio : n. (pl. ratios)1. 比,比率,比值;比例;系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達;求出…的比值;使…成比例。2. 將(相片)按比例放大或縮小。
  1. Considering the characteristics of internal force and structures of simply supported pc bridges, a novel automatically step - up method ( asum ), taking into account the influence of steel arrangement, steel ratio, stress losses of tendons and time - dependent concrete modulus, to analyze creep and shrinkage effects is presented. this method accepts all kinds of expressions of creep and shrinkage, and it is easy to calculate total stress, strain of concrete and steel and deflection of bridge at any time, the expected prediction accuracy will be obtained by further dividing the time - step within duration

    首先,針對預應力混凝土簡支梁橋的受力特徵和構造特點,提出了徐變效應分析的全量形式自動遞進法,可考慮截面上鋼筋位置、配筋率、預應力鋼筋鬆弛、混凝土彈性模量隨時間變化等影響,且計算式可適用於任何形式的收縮、徐變特性表達式;建立的公式可方便地求解任意時刻混凝土、鋼筋的應力與應變和跨中梁體的豎向變形,計算精度可方便地通過計算時段的細分來控制,直至給出滿意的結果。
  2. Comparing with conventional electromagnetic transformer, piezoelectric transformer has many advantages such as compact volume, high step - up ratio, non - flammability and none - electromagnetic pollution, which is an indispensable part in the electronic information system

    壓電變壓器相對于傳統的電磁變壓器具有體積小、重量輕、升壓比高、不易燃、無電磁污染等特點,較好的解決了電磁壓電變壓器體積大、電磁污染嚴重等缺陷,是電子信息系統中不可或缺的重要部件。
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