Sinusoidal pulse flow behavior of polymer melt in long pipe is studied.
研究聚合物熔体在长圆导管中正弦脉动流动的过程 ,从理论上研究了压力梯度变化时 ,产量和功率的变化 ;以及产量变化时 ,压力和功率的变化。
As the special environment for the use of toy makes it possible for the "long hole" to be cleverly applied in toy design,some structures which can not drive in the general mechanical transmission can be used in the construction of toys.
由于玩具特殊的使用环境,"长圆孔"在玩具机构的设计中应用得十分巧妙,一些不能在一般机械传动中使用的结构形式能够用于玩具机构。
By using the analysis solution of differential equations based on thin shell theory, the stresses in pressurized long cylinder or piping stiffened with stiffeners were analyzed.
对用加强环加强的受压长圆筒或管道(简称加强圆筒)应用薄壳力矩理论微分方程的解析解求解加强圆筒中的各项应力。