long body axis 中文意思是什麼
long body axis
解釋
身體縱軸-
Sonographic examinations of the pancreas were performed by sagittal scanning at the epigastrium ; the long axis and short axis of the oval cross - sections of both the pancreatic head and body were measured
檢查測量的方式是在上腹部作縱向掃描，可以分別得到胰臟頭部與體部之圓形縱切面造影，進而分別測量胰臟頭部與體的長軸與短軸，一共為4個胰臟因數。 -
Midway through, however, this orientation shifts 90 degrees, and the long axis of the oval extends from the front of the mother ' s body to her back
不過到了中段，產道最寬的方位就轉了90度，也就是卵形長軸分別朝向孕婦腹面與背面。 -
The paper analyzed the struture of the tri - eccentric butterfly vavle at length, defined the tri - eccentric butterfly valve, educed the geometry function and its characteristic about the section of the butterfly disc. the results indicate : the parallel contour line across butterfly disc thickness is normal ellipse, thereby eslablished function relations between its geometry parameters ( long axis and short axis ) of three primary sections of the butterfly disc and the tri - eccentricity ; in order to avoid interference between the butterfly disc and the valve seat as well as the valve body, combining the torque, we obtained the feasible range about the rotation center of the tri - eccentric butterfly vavle
本文主要分析了三偏心蝶閥的結構，給出了三偏心的定義，推導出了蝶板截面的幾何方程及其性質，結果表明，沿蝶板厚度的平行截面輪廓線為標準的橢圓形，進而推導出了蝶板幾個主要截面的幾何參數（長軸、短軸）與三個偏心之間的函數關系；考慮到蝶板啟閉過程中避免與閥體及閥座發生干涉，結合蝶板的啟閉扭矩，確立了三偏心蝶閥回轉中心的適宜區域。
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