rotational symmetry 中文意思是什麼
rotational symmetry
解釋
軸對稱；旋轉對稱- rotational : adj. 1. 旋轉的；輪流的，循環的。2. 【農業】輪作的。
- symmetry : n. 對稱；勻稱；調和；勻稱美。 bilateral symmetry 左右對稱。 radial symmetry 輻射對稱。
-
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。 -
The result of the calculation for tip clearance is reasonable when it is compared with theory. two ways are put forward for convention of dimension of the turbine components from high temperature to low one, which is related with tip clearance, a simple example is used to illuminate that the two ways are useful, using the method of design optimization, axiisk and a blade of a certain turhine is analysed, it showes that the method of design optimization is feasible to be used for convertion of dimension of the turbine components. finally, ansys software is used to analyzed the variation of tip clearance with the method of cyclic symmetry analysis when engine works under the conditions of temperature and rotational speed, am using a new method to deal with thermal contact resistance in the calculation
本文完善了計算渦輪葉尖間隙的簡化演算法程序，增加了程序的計算功能，並將其應用於某高壓渦輪進行葉尖間隙分析，所得結果與理論結果進行了對比，得出修改後的程序用於葉尖間隙計算是合理的；同時提出了與葉尖間隙相關的渦輪典型部件的冷、熱態的尺寸兩種換算方法，使用優化設計的方法進行了實例分析，說明了所提出的計算方法是可行的；最後應用ansys有限元軟體利用循環對稱的方法分析了某型發動機高壓渦輪在溫度場及離心力作用下的葉尖間隙在發動機工作過程中變化情況，並分析了計算中的接觸熱阻的處理問題。 -
Mundry uses the same principle for three layered systems with linear expansion or rotational symmetry.
穆恩德瑞將同一原理應用於具線性延伸或轉動對稱的三層狀系統。 -
Thus rotational symmetry of the microemulsion is broken and microemulsion becomes optical anisotropy. an understanding of the physical origins of such phenomena is of great practical and fundamental interest
微乳液作為一種復雜流體是由水、油、表面活性劑及助表面活性劑按適當的比例混合，自發形成外觀透明或半透明的熱力學穩定體系。 -
But with such a shell, we find that there emerges a deeper type of symmetry, not evident at first : for the shell has a symmetry under rotational motion, provided that this is accompanied by uniform expansion or contraction
但以蝸牛殼這樣的對稱狀態，我們其實是發現了一種更深層類型的對稱- - - - - -此為一種在旋轉的行動之下的新型對稱破缺，其原因來自於均勻的擴展或收縮的伴隨條件。
分享友人