We divide human capital into two kinds types: Heterogeneous mediumtype human capital and same quality type human capital.
我们把人力资本分成两种类型：异质型人力资本和同质型人力资本。
2
Internal feedback cascade speed control system is proved to have a good cost performance and can be used on large and mediumtype fans extensively.
内反馈串级调速系统是一种具有优良的性能价格比的调速节能设备，适合于电厂的大中型风机调速节能运行。
3
Virus free potato seedlings from tubes: Kexin No. 4 and Zaodabai were used as experimental materials. The effect of illumination and mediumtype on potato micro-tuber inducement were studied.