绿色的含义是理智,安静,稳重,也有人称之为“服从色”。()
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与相同模数、齿数和压力角的标准齿轮相比,正变位齿轮的齿厚 ; 齿槽宽 ;齿廓平均曲率半径 ;齿顶厚 ;分度圆半径 ; 基圆半径 ; 齿距 。
HRB400级钢筋中的400代表钢筋的屈服强度设计值。
At the end of an interview, when the candidates are going to ask the interviewers some questions, they must be very careful to avoid some commonly asked __________