random shape 中文意思是什麼
random shape
解釋
無意義圖形-
Abstract : the far - field spot characteristics of laser converted by random phase plate are analyzed theoretically, including the shape, size, rotational symmetry and diffractive efficiency of the spots, as well as the distribution of subsidiary spot. by comparing the influence of phase element shape ( triangular, square and hexagonal ) on the characteristics, we found that the random phase plate with hexagonal array structure is more suitable for the beam smoothing in laser fusion
文摘:從理論上分析了激光經隨機位相板變換后在遠場的光斑特性（包括光斑的形狀、大小、旋轉對稱性、衍射效率以及旁瓣分佈） ，通過比較三種形狀位相元（等邊三角形、正方形和正六邊形）的遠場光斑特性，得知正六邊形位相元結構的隨機位相板更適合於激光聚變中的束勻化。 -
Stereoscan photographs showed that both the inner and outer coating membranes of sapcus were formed by different size and shape micro particles of coating materials, which were closely stacked at random
高吸水性樹脂包膜尿素的內外膜均是由大小不一形狀不規則的包膜材料微粒無序緊密堆積，並由膠粘劑填充空隙膠聯而成，包膜疊層間和疊層內有微小孔隙，它們是尿素溶出的通道。 -
The influence of shape factor of granular on nonlinear susceptibility in random nonlinear composites
非線性復合材料中組份顆粒形狀因子對非線性極化率的影響 -
This paper illustrates how to do well in english vocabulary teaching from three aspects : " the tone - shape " union, pattern grouping, and checking at random
根據認知心理學中記憶規律、遺忘規律和英語詞匯本身的特點，從「音形」結合、模式組塊和隨機檢查三方面對如何搞好英語詞匯教學進行了闡述。 -
A good model of the full - grade aggregate concrete with high aggregate content is precondition to successfully execute concrete meso - mechanical simulation, so that the main work in the dissertation is focused on the following study concerning the random aggregate model of dam fully - graded concrete : ( 1 ) based on the topology of spherical aggregates, an algorithm of the random convex polyhedron aggregate model was presented considering the actual aggregate content, grading, and aggregate shape, and corresponding fortran program was developed to generate random convex polyhedron aggregate
針對全級配大壩混凝土的實際骨料含量和骨料形態，本文做了以下主要工作: （ 1 ）在一種高效率生成的隨機球骨料模型的基礎上，形成隨機凸多面體骨料模型，同時研究了細觀單元屬性判別方法，編制了對含有凸多面體骨料的細觀區域進行結構性有限元網格剖分程序。本文給出的三維隨機骨料模型演算法不但考慮了混凝土的骨料的實際級配和含量，而且計及了骨料的實際形態。 -
A new kind of numerical method, the statistical distributed source boundary point method ( sdsbpm ), used to calculate the acoustic radiation problem caused by the random vibrating body is presented ; a test for the effectiveness of the sdsbpm is carried out on the aspects of its calculation precision, adaptation to the geometric shape of vibrating body as well as its ability to overcome the non - uniqueness problem through various examples with different boundary shapes and different boundary value distributions
第四章提出了一種新型的隨機振動聲輻射計算方法?統計分佈源邊界點方法；通過諸多不同邊界曲面和不同邊界量分佈的隨機振動聲輻射算例，從計算精度、對振動體表面幾何形狀的適應性以及克服解的非唯一性等方面，對統計分佈源邊界點方法的有效性進行了考證。 -
Analysis on unstable pressure dynamic of a dual medium reservoir of random shape by boundary element method
用邊界元法對雙重介質油藏壓力不穩定動態進行分析 -
This paper offers an effective method for target recognition with random shape in complex condition and has practical evaluation
該方法為復雜背景下任意形狀目標的識別提供了一種有效可行的方法，具有一定的實用價值。
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