Literature achieve a change from "serious" to "vulgarization" in the chessboard between the elite and the public, and the vector of literature communication turn from paper to electronic media.
即文学在大众与精英的对弈中实现了由“严肃”到“媚俗”的转变,以及文学传播载体由纸质到电子媒介的突破性转变。
With the tool of circle vector function, the involute helix profile with error is given, and with the media of engagement line, the error compensation mathematical model is established.
以圆矢量函数为工具,推出了误差条件下的渐开螺旋面方程,并以啮合线为媒介,建立了测量蜗杆误差补偿的数学模型。
A study is given to the necessary conditions for construction of normal vector wave functions in homogeneous stratified media.
研究了在均匀分层介质中构成标准矢量波函数的必要条件。
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