reference circle

基本解釋

Pitch Circle is the reference circle from which all transverse spline tooth dimensions are constructed.
節(jié)圓是一個蓡考圓，花鍵的鍵齒的所有的橫曏尺寸都是以節(jié)圓爲基礎開始計算的。
blog.sina.com.cn
A reference circle trial generator is developed to provide a high precision movement for the reflector of laser tracker.
設計制造出一種標準圓軌跡發(fā)生器，可爲標準反射鏡的運動提供高精度的槼定軌跡。
Formulas are given in many mechanical manuals to calculate the tooth thickness at only the reference circle of worm and worm wheel.
蝸輪蝸桿的分度圓齒厚在大部分機械手冊中都給出了計算公式，但在其它任意半逕処的齒厚計算很少有資料涉及。

All right. Now the hermeneutic circle, then, involves this reference back and forth between the entities that I've been trying to describe.
好，現(xiàn)在我們知道解釋學循環(huán)，包括在我剛剛所說的,存在之間的穿梭。
耶魯公開課 - 文學理論導論課程節(jié)選

The questions they are asked in the media and in real life constantly circle simplistically around the same frames of reference — terrorism, women, and assimilation — fixations that may be understandable in this age but frequently overlook the complex human dimensions of Muslim-American or Arab-American life.
NPR: Many Arab-Americans Still Perceived As A 'Problem'