题目内容

斜齿圆柱齿轮的齿形系数YFa与齿轮的参数 、 和 有关; 而与无关 .

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影响齿轮齿面接触应力σH的主要几何参数是 和 ; 而影响其极限接触应力σHlim的主要因素是 和 .

You can search for what you want to buy with the ()

A. key
B. keyword
C. keyboard
D. information

Title description is usually the first step of ()

A. release products
B. releasing products
C. search products
D. searching products

The beautiful pictures of the product () buyer's desire to buy.

A. attribute
B. accurate
C. stimulates
D. template

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