The parametric modeling method for loxodrome normal circular-arc spiral bevel gear was presented.
给出了斜航式法向圆弧螺旋锥齿轮的参数化建模方法。
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告别(上) 
(语音室听力材料)
群山(下)
群山(上)
群山(上)
群山(上) Yonder, for example, is Cathedral Peak, some three miles away, with a scattered growth of this pine creeping like mosses over the roof and around the beveled edges of the north gable, nowhere giving any hint of an ascending axis.
例如,远处是大教堂峰,大约三英里外,这棵松树零星地生长,像苔藓一样爬过屋顶和北山墙
斜边,没有任何迹象表明有上升
轴线。