进口段 meaning in English
entrance zone
entry section
Examples
- The calculation formulas for velocity coefficients 2 and 5 for the throat and throat inlet section were deduced from the theoretical research on the velocity coefficients in time - averaged basic equations by use of the unsteady momentum equation and time - averaged value calculation method
摘要运用非恒定的动量方程和时均值计算方法，对脉冲液体射流泵时均值基本方程中的流速系数进行了理论研究，推导出了喉管和喉管进口段流速系数2和5的计算式。 - A solid - liquid fluidized bed has been designed and installed , which will be used in the heat exchanging and descale field . the experimental study for distributor design was carried out and the particles distribution in the tubes of the solid - liquid fluidized bed under different operating conditions was studied by using the ccd measure system . experimental results show that heterogeneous pores distributor which was arranged in the inlet chamber of the solid - liquid fluidized bed can improve the nonuniform distribution of particles in the pipe bundle under high flow rate . the nonuniform decreases by decreasing the mount of pore , but the solid holdup decreases too . the particles distribution is influenced by the position of the heterogeneous pores distributor
实验结果表明：在液固循环流化床进口段安装可调节高度的变孔径分布板，能在较高的流速下，较好的改善固体颗粒在管束中的不均匀分布；开孔率越小固体颗粒在管束中的分布越均匀，但管束中粒子的平均固含率也越小；分布板的安装高度对颗粒的分布有很大的影响，在实验范围内分布板的安装距离管束入口处越远，颗粒在管束中的分布越均匀。