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radius vector 【數、物】矢徑,輻;位置矢量。

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Based on the three new supposition and the tow new mechanical tools : moment vector and radius vector , the warping theory introduced the analytical method of the rotation of a cross section around a fixed axis , so as to make the space stability of the thin - walled member complanate and one - dimensioned 翹曲理論以三條新的假定和新建立的彎矩矢量和轉角向徑兩大力學工具為基礎,提出了繞定軸轉動的分析方法,使薄壁構件的空間變形平面化、一維化。

According to the principle of odontoprisis ' force , the radius vector value of cam on the open - closed armature position was calculated by the means of one dimension searching method at the open - closed odontoprisis cam outline 該方法根據咬紙牙產生咬紙力的原因,計算實際開閉牙位置在凸輪上對應的向徑值,利用計算機一維搜索方法得到開閉牙的實際位置。

The angular extent in a specified plane which contains all the radius vectors of the polar curve of luminous intensity having lengths greater than a specified fraction of the maximum 在某一平面上,一定角寬范圍內所包含的光強極軸曲線上的矢徑長度均大于其最大值的某一特定比例,這種情況定義為光束的發散。

Second , since the radius vectors r to the extreme points of the ellipse satisfy ( 5 . 3 - 12 ) they are parallel to the two allowed d vectors 其次,因為到橢圓極值點的徑向矢量r滿足式( 5 3 - 12 ) ,故這兩個徑向矢量與兩個允許的d矢量平行。