step the sizes 中文意思是什麼
step the sizes
解釋
註明尺寸等級-
An empirical analysis is made with the population data of the us cities to verify the theory and models developed in this paper, which will contribute to reconcile the apparent difference between the hierarchical step - like frequency distribution of city sizes suggested by central place theory and the smooth curve reflected by the work on the rank - size rule
多重zipf維數模型不僅可以有效地統一中心地的等級階梯與位序-規模法則反映的連續分佈，而且可以揭示城市體系演化的更多信息和隱含法則。以美國城市體系1998年的數據為實證對象，給出了城市規模分佈的多分維 -
Quantum confinement effects of semiconductor nanocrystals cdsaiseo9 in glass abstract a series of cds0. iseo. 9 semiconductor nanocrystals embedded in silicate glass with different sizes have been fabricated by one - step and two - step annealing methods. the electronic state and optical properties of these nanocrystals also have been studied through room - temperature absorption spectra and electroabsorption spectra
本文用一步退火和兩步退火方法在玻璃基體中生長了一系列不同尺寸的cds _ （ 0 . 1 ） se _ （ 0 . 9 ）半導體納米晶體。對制備的納晶樣品作了室溫吸收光譜和電調制吸收光譜的測量，以此研究了納晶的電子結構及光學性質。 -
The phases of sulfuric acid slag of various sizes were drawn by seven - step method in the improved separation condition of disturber, and phases of thallium were compared before and after the slag was grinned to analyze phase migration
為了進一步探討顆粒物中鉈相態提取的技術和方法，在優化干擾物分離條件下，採用七步法提取了幾種不同粒徑硫酸廢渣中鉈的相態，比較了廢渣研磨前、后各相態鉈的異同。 -
The bar sectional sizes are optimized to make the weight of the structure minimized under constraints of stress, displacement and local stability. at the second step, supposing the active displacement constraints of the first step keeping unchanged. a quadratic programming model that increases the structural rigidity is solved
求解時分為兩層，第一層在給定節點位置下對桿件截面進行優化，同時考慮了應力、局部穩定約束和位移約束的重量最輕；第二層假定截面層的有效位移約束作用不變，求解一個使桁架剛度增強的二次規劃問題，獲得既不違反約束，又使目標函數不上升的新的節點位置，再返回第一層。 -
Under the given condition, the undt for the lager center area and the smaller outer step area must use the probe with different sizes, the bonding quality can be evaluated by the experimented avg curves
在給定探傷條件下，對較大的中心截面和邊界小臺階面可選用不同的探頭探傷，觸頭燒結狀況可以通過實驗的波幅?距離曲線進行判定。
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